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news release                                    [TENNECO AUTOMOTIVE LOGO]



                                                     

     Contacts:  Jane Ostrander                          Leslie Hunziker
                Media Relations                         Investor Relations
                847 482-5607                            847 482-5042
                jane.ostrander@tenneco-automotive.com   leslie.hunziker@tenneco-automotive.com



            TENNECO AUTOMOTIVE REPORTS RECORD FIRST QUARTER REVENUES
                                 AND NET INCOME

     o  Twelfth consecutive quarter of year-over-year revenue growth
     o  Net income of $7 million; EPS of 16-cents versus year earlier loss
     o  EBIT up 35%; EBITDA up 16%

     Lake Forest, Illinois, April 21, 2005 -- Tenneco Automotive (NYSE:
     TEN) reported improved first quarter net income of $7 million, or
     16-cents per diluted share, compared with a net loss of $2 million, or
     5-cents per diluted share in first quarter 2004. The company improved
     net income despite North American OE production cuts and higher steel
     prices globally. Adjusted for the items below, first quarter net
     income increased to $9 million, or 20-cents per diluted share, versus
     $6 million, or 15-cents per diluted share a year ago.

     EBIT (earnings before interest, taxes, and minority interest)
     increased 35 percent year-over-year to $44 million compared with $33
     million in first quarter 2004. EBITDA (EBIT before depreciation and
     amortization) was $90 million versus $78 million a year ago. Adjusted
     EBIT was $47 million, flat year-over-year, and the company reported
     its 13th consecutive quarter of year-over-year improved adjusted
     EBITDA at $93 million, up from $92 million a year ago. See the tables
     attached to the press release, which reconcile GAAP results to
     non-GAAP results.

     ADJUSTED FIRST QUARTER 2004 AND 2005 RESULTS:





                                                                  Q1 2005                               Q1 2004
                                                     ---------------------------------     -----------------------------------
                                                                        Net       Per                         Net         Per
                                                     EBITDA    EBIT    Income    Share     EDITDA    EBIT    Income      Share
                                                     ------    ----    ------    -----     ------    ----    ------      -----

                                                                                                 
Earnings Measures                                      $90      $44      $ 7      $0.16      $78      $33      $(2)      $(0.05)

Adjustments (reflects non-GAAP measures):
 Restructuring and restructuring related expenses        3        3        2       0.04        5        5        3         0.07
 New Aftermarket customer changeover costs               -        -        -          -        6        6        3         0.08
 Consulting fees indexed to stock price                  -        -        -          -        3        3        2         0.05
                                                       ---      ---      ---      -----      ---      ---      ---       ------
Non-GAAP earnings measures                             $93      $47      $ 9      $0.20      $92      $47      $ 6       $ 0.15
                                                       ===      ===      ===      =====      ===      ===      ===       ======


                                    - More -



                                      -2-

     FIRST QUARTER 2005 ADJUSTMENTS:
  o  Restructuring and restructuring related expenses of $3 million pre-tax, or
     4-cents per diluted share.

     FIRST QUARTER 2004 ADJUSTMENTS:
  o  Restructuring and restructuring related costs of $5 million pre-tax, or
     7-cents per diluted share;
  o  Expenses of $6 million pre-tax, or 8-cents per diluted share, associated
     with changeover costs for a new aftermarket customer;
  o  Expenses of $3 million pre-tax, or 5-cents per diluted share, related to
     consulting fees indexed to the stock price based on a 1999 agreement for
     implementing EVA(R), a shareholder value improvement initiative.

     "We are pleased with our performance this quarter, especially in light of
     tough market conditions with slowing OE production in North America and the
     ongoing high cost of steel worldwide," said Mark P. Frissora, chairman and
     CEO, Tenneco Automotive. "New incremental OE business in North America and
     Europe and our strong aftermarket presence globally, combined with a
     diverse OE customer base, a favorable platform mix and our geographical
     balance, helped us counter these negative market conditions."

     Tenneco Automotive reported its twelfth consecutive quarter of
     year-over-year revenue growth with $1.106 billion in the quarter, compared
     with $1.033 billion in first quarter 2004. Favorable currency exchange
     rates benefited revenue by $37 million. Incremental new OE business; higher
     heavy duty and specialty vehicle volumes; strong Japanese OE transplant
     business (21% of North America OE sales); and improved North America
     aftermarket sales drove the increase.

     The company's gross margin in the quarter was 19.3%, compared with 19.7% a
     year ago. Restructuring impacted gross margin by 0.1 percentage point in
     the quarter and 0.3 percentage point in first quarter 2004. This year,
     higher net steel costs also had a 0.8 percentage point impact, more than
     accounting for the year-over-year decline in gross margin.

     Steel cost increases for the first quarter, net of other material cost
     savings and recovery from OE and aftermarket customers, were $9 million.
     The company still expects its total 2005 steel cost increases, net of other
     material cost savings and recovery from customers, will be between $30
     million and $50 million.

     Sales, General, Administrative and Engineering (SGA&E) expense in the
     quarter was 11.0% of sales, including 0.1 percentage point for
     restructuring versus 12.2% a year ago, which includes 0.7 percentage point
     for restructuring, costs related to a new aftermarket customer and
     consulting fees indexed to the stock price.

     Operating cash outflow in the quarter was $99 million versus a $13 million
     inflow in the first quarter 2004. The change was driven by seasonal
     inventory growth, primarily to support stronger aftermarket sales globally;
     the impact from the discontinuation of Ford Motor Company's and
     DaimlerChysler's advance payment programs; and a days payable outstanding






                                      -3-

     performance of 74 days, in-line with the company's historical average over
     the last two years of 74 days, versus a record 81 days payable outstanding
     in first quarter 2004.

     "This was a particularly heavy cash use quarter due to our typical higher
     working capital use in the first quarter as well as higher use of operating
     cash to support stronger revenue growth. Additionally, we used $40 million
     in cash to reduce our long-term debt, as well as another $11 million to
     acquire the exhaust operations of Gabilan Manufacturing. We believe these
     two decisions, which reduced our financing costs and completed an accretive
     acquisition that also resulted in acquiring 100% of Harley Davidson's
     exhaust business, will deliver short and long-term benefits for
     shareholders," Frissora said. "Generating cash to pay down debt remains our
     number one priority and we will continue our intense focus on working
     capital reductions."

     Cash performance in the quarter resulted in cash balances of $68 million at
     quarter-end and debt net of cash balances of $1.340 billion. Total debt was
     $1.408 billion versus $1.426 billion a year ago.

     The company outperformed its bank debt covenants in the quarter. At March
     31, the leverage ratio was 3.52, below the maximum limit of 4.75; the fixed
     charge ratio was 1.86, exceeding the required ratio of 1.10; and the
     interest coverage ratio was 2.84, exceeding the minimum coverage ratio of
     2.0.

     The company also announced that it has been notified by General Motors that
     GM's current advanced payment program will terminate during the second
     quarter. At March 31, 2005, that program had reduced the company's
     receivables by $74 million. Tenneco Automotive believes the GM decision
     will have minimal impact on its liquidity given that Tenneco Automotive
     expanded its borrowing facilities by $55 million during the first quarter.

     NORTH AMERICA
  o  North American original equipment revenue decreased to $375 million versus
     $381 million in first quarter 2004. Excluding the impact of currency and
     catalytic converter pass-through sales, revenue was up 4% (Tables to this
     press release reconcile GAAP revenues to revenues adjusted for catalytic
     converter pass-through sales and currency). A favorable platform mix, new
     platform launches and strong heavy duty ride control volumes helped offset
     production declines on key vehicle platforms.
  o  North American aftermarket revenue was $130 million, versus $122 million in
     first quarter 2004. The increase was driven by new business, stronger unit
     sales and higher pricing in both product lines.
  o  EBIT for North American operations was $37 million, versus $30 million a
     year ago. Adjusted first quarter 2005 EBIT was $39 million, flat
     year-over-year. The company's intensified efforts to control costs, improve
     manufacturing efficiencies and generate savings from restructuring
     initiatives as well as stronger volumes helped offset higher steel costs.
  o  First quarter 2005 EBIT results include $2 million in restructuring and
     restructuring related costs. First quarter 2004 EBIT results include $9
     million in costs related to the adjustments described above.





                                      -4-

     EUROPE AND SOUTH AMERICA
  o  European original equipment revenue was $386 million versus $328 million a
     year ago. Adjusted for favorable currency and catalytic converter
     pass-through sales, revenue increased 11%. The increase was driven by
     record ride control revenues and the company's position on top-selling
     vehicles.
  o  European aftermarket revenue was $82 million (which includes $4 million in
     favorable currency) versus $80 million a year ago. Exhaust sales outpaced
     an 8% industry decline due to market share gains and price increases, but
     were more than offset by slowing ride control sales.
  o  South American operations generated $44 million in revenue compared with
     $34 million in first quarter 2004. Adjusted for favorable currency,
     revenues increased 22% driven by higher OE and aftermarket sales.
  o  EBIT for European and South American operations significantly improved to
     $5 million versus breakeven for the same period one year ago. Adjusted EBIT
     also improved to $6 million from $4 million in the first quarter 2004.
     Record OE ride control volumes, stronger OE production rates overall and
     more efficient aftermarket operations drove the improvement.
  o  First quarter 2005 EBIT adjustments include $1 million in restructuring and
     restructuring related costs. First quarter 2004 EBIT includes $4 million in
     costs related to the adjustments described above.

     ASIA PACIFIC
  o  Revenue from Asian operations was $42 million, up from $39 million in first
     quarter 2004. Stronger ride control and exhaust sales in India and stronger
     exhaust sales in Thailand more than offset a 6% revenue decline in China
     due to weakened market conditions.
  o  Australian revenue was $47 million versus $49 million a year ago. Soft OE
     sales as a result of an OE customer's start-up issues were partially offset
     by new ride control springs business.
  o  EBIT for the Asia Pacific operations was $2 million versus $3 million, or
     $4 million on an adjusted basis, in first quarter 2004. The decline was
     driven by a drop in China's profitability due to lower volumes combined
     with higher costs associated with the company's plans for a new technical
     center to support its OE business and to establish a stronger aftermarket
     presence.
  o  First quarter 2004 EBIT includes $1 million in costs related to the
     adjustments described above.

     "While we are not immune to production changes in North America or other
     market uncertainties, we have plans in place to adjust our operations to
     respond to changing market conditions," Frissora said. "We believe our
     product, market and global diversity will help us counter current and
     future market challenges."

     The company also announced that it elected to change its accounting for
     inventory valuation in North America from Last In/First Out (LIFO) to First
     In/First Out (FIFO). The change, which did not have any impact on the
     company's results of operations, will drive greater global consistency in
     accounting methodologies and improve administrative efficiency. The balance
     sheet has been restated to reverse LIFO reserves and related deferred tax
     effects.

     Attachment 1 to this press release provides additional information on
     Tenneco Automotive's first quarter 2005 results:
     Statements of Income (Loss) -- 3 Months
     Balance Sheets





                                      -5-

     Statements of Cash Flow

     Attachment 2:
     Reconciliation of GAAP Net Income to EBITDA -- 3 Months
     Reconciliation of GAAP to Non-GAAP Earnings Measures -- 3 Months
     Reconciliation of GAAP Revenue to Non-GAAP Revenue Measures -- 3 Months

     CONFERENCE CALL
     The company will host a conference call on Thursday, April 21, 2005 at
     10:30 am EDT. The dial-in number is 888 395-1810 domestic or 210 234-8003
     international. The passcode is Tenneco Auto. The call and accompanying
     slides will be available on the financial section of the Tenneco Automotive
     web site at www.tenneco-automotive.com. A recording of the call will be
     available one hour following completion of the call on April 21, 2005
     through May 21, 2005. To access this recording, dial 866 395-9178 or 203
     369-0502 international. The purpose of the call is to discuss the company's
     operations for the last fiscal quarter, as well as other matters that may
     impact the company's outlook. A copy of the press release is available on
     the financial and news sections of the Tenneco Automotive web site.

     2005 ANNUAL MEETING
     Tenneco Automotive's annual meeting of shareholders will be on Tuesday, May
     10, 2005 at 10:00 a.m. CDT. The meeting will be held at the corporate
     headquarters, 500 North Field Drive, Lake Forest, Illinois.

     Tenneco Automotive is a $4.2 billion manufacturing company with
     headquarters in Lake Forest, Illinois and approximately 18,400 employees
     worldwide. Tenneco Automotive is one of the world's largest designers,
     manufacturers and marketers of emission control and ride control products
     and systems for the automotive original equipment market and the
     aftermarket. Tenneco Automotive markets its products principally under the
     Monroe(R), Walker(R), Gillet(R) and Clevite(R)Elastomer brand names. Among
     its products are Sensa-Trac(R) and Monroe Reflex(R) shocks and struts,
     Rancho(R) shock absorbers, Walker(R) Quiet-Flow(R) mufflers, Dynomax(R)
     performance exhaust products, and Clevite(R)Elastomer noise, vibration and
     harshness control components.

     This press release contains forward-looking statements. Words such as
     "continue," "will," "expects," "believe," "plans," and similar expressions
     identify forward-looking statements. These forward-looking statements are
     based on the current expectations of the company (including its
     subsidiaries). Because these forward-looking statements involve risks and
     uncertainties, the company's plans, actions and actual results could differ
     materially. Among the factors that could cause these plans, actions and
     results to differ materially from current expectations are: (i) changes in
     automotive manufacturers' production rates and their actual and forecasted
     requirements for the company's products, including the overall highly
     competitive nature of the automotive parts industry, and the company's
     resultant inability to realize the sales represented by its awarded book of
     business which is based on anticipated pricing for the applicable program
     over its life, and is subject to increases or decreases due to changes in
     customer requirements, customer and consumer preferences, and the number of
     vehicles actually produced by customers; (ii) increases in the costs of raw
     materials, including





                                       -6-

     the company's ability to successfully reduce the impact of any such cost
     increases through materials substitutions, cost reduction initiatives and
     other methods; (iii) the cyclical nature of the global vehicular industry,
     including the performance of the global aftermarket sector, and changes in
     consumer demand and prices, including longer product lives of automobile
     parts and the cyclicality of automotive production and sales of automobiles
     which include the company's products, and the potential negative impact on
     the company's revenues and margins from such products; (iv) the company's
     continued success in cost reduction and cash management programs and its
     ability to execute restructuring and other cost reduction plans and to
     realize anticipated benefits from these plans; (v) the general political,
     economic and competitive conditions in markets and countries where the
     company and its subsidiaries operate, including the strength of other
     currencies relative to the U.S. dollar and currency fluctuations and other
     risks associated with operating in foreign countries; (vi) governmental
     actions, including the ability to receive regulatory approvals and the
     timing of such approvals; (vii) changes in capital availability or costs,
     including increases in the company's costs of borrowing (i.e., interest
     rate increases), the amount of the company's debt, the ability of the
     company to access capital markets and the credit ratings of the company's
     debt; (viii) the cost and outcome of existing and any future legal
     proceedings, and compliance with changes in regulations, including
     environmental regulations; (ix) workforce factors such as strikes or labor
     interruptions; (x) the company's ability to develop and profitably
     commercialize new products and technologies, and the acceptance of such new
     products and technologies by the company's customers and the market; (xi)
     further changes in the distribution channels for the company's aftermarket
     products, further consolidations among automotive parts customers and
     suppliers, and product warranty costs; (xii) changes by the Financial
     Accounting Standards Board or other accounting regulatory bodies to
     authoritative generally accepted accounting principles or policies; (xiii)
     acts of war, riots or terrorism, including, but not limited to the events
     taking place in the Middle East, the current military action in Iraq and
     the continuing war on terrorism, as well as actions taken or to be taken by
     the United States or other governments as a result of further acts or
     threats of terrorism, and the impact of these acts on economic, financial
     and social conditions in the countries where the company operates and (xiv)
     the timing and occurrence (or non-occurrence) of transactions and events
     which may be subject to circumstances beyond the control of the company and
     its subsidiaries. The company undertakes no obligation to update any
     forward-looking statement to reflect events or circumstances after the date
     of this press release. Additional information regarding these risk factors
     and uncertainties is detailed from time to time in the company's SEC
     filings, including but not limited to its report on Form 10-K for the year
     ended December 31, 2004. Further information can be found on the company's
     web site at www.tenneco-automotive.com.



                                       ###








                                                                    ATTACHMENT 1

              TENNECO AUTOMOTIVE INC. AND CONSOLIDATED SUBSIDIARIES
                           STATEMENTS OF INCOME (LOSS)
                                    Unaudited
                          THREE MONTHS ENDED MARCH 31,
                  (Millions except share and per share amounts)




                                                                         2005                2004
                                                                     --------------      --------------
                                                                                   
Net sales and operating revenues                                     $       1,106       $       1,033 (b)
                                                                     ==============      ==============

Costs and Expenses
   Cost of Sales (exclusive of depreciation shown below)                       893 (a)             829 (c)
   Engineering, Research and Development                                        24                  17
   Selling, General and Administrative                                          98 (a)             109 (b) (c) (d)
   Depreciation and Amortization of Other Intangibles                           46                  45
                                                                     --------------      --------------
          Total Costs and Expenses                                           1,061               1,000
                                                                     ==============      ==============

Other Loss                                                                      (1)                  -

Income before Interest Expense,
 Income Taxes, and Minority Interest
   North America                                                                37 (a)              30 (b) (c) (d)
   Europe & South America                                                        5 (a)               - (c) (d)
   Asia Pacific                                                                  2                   3 (d)
                                                                     --------------      --------------
                                                                                44                  33
Less:
   Interest expense (net of
     interest capitalized)                                                      32                  35
   Income tax expense (benefit)                                                  4                  (1)
   Minority interest                                                             1                   1
                                                                     --------------      --------------
Net Income (Loss)                                                                7                  (2)
                                                                     --------------      --------------


Average common shares outstanding:
   Basic                                                                      42.7                40.9
                                                                     ==============      ==============
   Diluted                                                                    45.0                43.5
                                                                     ==============      ==============

Earnings (loss) per share of common stock:
   Basic                                                             $        0.17       $       (0.05)
                                                                     ==============      ==============

   Diluted                                                           $        0.16       $       (0.05)
                                                                     ==============      ==============





(a) Includes restructuring and restructuring related charges of $3 million
pre-tax, $2 million after tax or $0.04 per share. Of the adjustment $2 million
is recorded in cost of sales and the remaining $1 million is in SG&A.
Geographically, $2 million is recorded in North America and $1 million in
Europe.

(b) Includes changeover costs for a new aftermarket customer of $6 million
pre-tax, $3 million after-tax or $0.08 per share. Of the adjustment $4 million
is recorded in Sales and $2 million is recorded in SG&A. Geographically all of
the charge is recorded in North America.

(c) Includes restructuring and restructuring related charges of $5 million
pre-tax, $3 million after tax or $0.07 per share. Of the adjustment $2 million
is recorded in SG&A and the remaining $3 million is in cost of sales.
Geographically, $2 million is recorded in North America and $3 million in
Europe.

(d) Consulting fees indexed to stock price of $3 million pre-tax, $2 million
after-tax or $0.05 per share. The entire charge is recorded in SG&A.
Geographically $1 million of the charge is recorded in North America, Europe and
Asia Pacific respectively.



                                                                    ATTACHMENT 1

              TENNECO AUTOMOTIVE INC. AND CONSOLIDATED SUBSIDIARIES
                                 BALANCE SHEETS
                                   (Unaudited)
                                   (Millions)




                                                                                                      Restated
                                                                       March 31, 2005             December 31, 2004
                                                                     -----------------            -----------------
                                                                                            
 Assets

           Cash and Cash Equivalents                                 $            68              $            214

           Receivables, Net                                                      556 (a)                       488 (a)

           Inventories                                                           432                           396

           Other Current Assets                                                  212                           194

           Investments and Other Assets                                          694                           693

           Plant, Property, and Equipment, Net                                 1,095                         1,134
                                                                     ----------------             -----------------

           Total Assets                                              $         3,057              $          3,119
                                                                     ================             =================




Liabilities and Shareholders' Equity

           Short-Term Debt                                           $            48              $             19

           Accounts Payable                                                      704                           696

           Accrued Taxes                                                          25                            24

           Accrued Interest                                                       32                            35

           Other Current Liabilities                                             250                           273

           Long-Term Debt                                                      1,360 (b)                     1,401 (b)

           Deferred Income Taxes                                                 125                           126

           Deferred Credits and Other Liabilities                                353                           362

           Minority Interest                                                      25                            24

           Total Shareholders' Equity                                            135                           159
                                                                     ----------------             -----------------

           Total Liabilities and Shareholders' Equity                $         3,057              $          3,119
                                                                     ================             =================




(a)    Accounts Receivables net of:                                   March 31, 2005               December 31, 2004
                                                                     ----------------              -----------------
                                                                                             
           Accounts Receivable securitization programs               $           147               $           124
           Receivables collected under advance payment programs      $            74               $           132




(b)    Long term debt composed of:                                    March 31, 2005               December 31, 2004
                                                                     ----------------              -----------------
                                                                                             
           Term loan B (Due 2010)                                    $           356               $           392
           10.25% senior notes (Due 2013)                                        490                           490
           8.625% subordinated notes (Due 2014)                                  500                           500
           Other long term debt                                                   14                            19

                                                                     ----------------             -----------------
                                                                     $         1,360              $          1,401
                                                                     ================             =================



                                                                    ATTACHMENT 1

              TENNECO AUTOMOTIVE INC. AND CONSOLIDATED SUBSIDIARIES
                            STATEMENTS OF CASH FLOWS
                                   (UNAUDITED)
                                   (Millions)





                                                                            THREE MONTHS ENDED
                                                                                 MARCH 31,
                                                                       ---------------------------
                                                                         2005               2004
                                                                       --------            -------
                                                                                     
Operating activities:
  Net income                                                           $     7             $   (2)
  Adjustments to reconcile income (loss)
   to net cash provided (used) by operating activities -
    Depreciation and amortization of other intangibles                      46                 45
    Deferred income taxes                                                   (4)                (9)
    Changes in components of working capital (net of acquisition) -
      (Inc.)/dec. in receivables                                           (78)               (70)
      (Inc.)/dec. in inventories                                           (43)               (27)
      (Inc.)/dec. in prepayments and other current assets                  (23)               (26)
      Inc./(dec.) in payables                                               18                 79
      Inc./(dec.) in taxes accrued                                          --                  5
      Inc./(dec.) in interest accrued                                       (3)                (2)
      Inc./(dec.) in other current liabilities                              (8)                15
    Other                                                                  (11)                 5
                                                                       --------            -------
Net cash provided by operating activities                                  (99)                13

Investing activities:
  Net proceeds from sale of assets                                           1                 11
  Expenditures for plant, property & equipment                             (32)               (25)
  Acquisition of business                                                  (11)                --
  Investments and other                                                      3                 (1)
                                                                       --------            -------
Net cash used by investing activities                                      (39)               (15)
                                                                       --------            -------

Financing activities:
  Issuance of common shares                                                  2                  3
  Retirement of long-term debt                                             (41)                (2)
  Net inc./(dec.) in short-term debt excluding current
   maturities on long-term debt                                             33                 (2)
  Other                                                                      1                  1
                                                                       --------            -------
Net cash used by financing activities                                       (5)                --
                                                                       --------            -------

Effect of foreign exchange rate changes on cash and
  cash equivalents                                                          (3)                 6
                                                                       --------            -------

Inc./(dec.) in cash and cash equivalents                                  (146)                 4
Cash and cash equivalents, January 1                                       214                145
                                                                       --------            -------

Cash and cash equivalents, March 31                                    $    68             $  149
                                                                       ========            =======


Cash paid during the period for interest                               $    31             $   37
Cash paid during the period for income taxes                           $     7             $    3







                                                                    ATTACHMENT 2

                               TENNECO AUTOMOTIVE
             RECONCILIATION OF GAAP(a) NET INCOME (LOSS) TO EBITDA
                                    Unaudited





                                                                                        Q1 2005
                                                              ------------------------------------------------------------
                                                               North             Europe           Asia
                                                              America             & SA           Pacific          Total
                                                              -------           --------         -------        ----------
                                                                                                    
Net income                                                                                                      $        7

Minority interest                                                                                                        1

Income tax expense (benefit)                                                                                             4

Interest expense (net of interest capitalized)                                                                          32
                                                                                                                ----------

EBIT, Income before interest expense, income
taxes and minority interest (GAAP measure)                    $    37           $      5         $     2                44

Depreciation and amortization of other intangibles                 23                 20               3                46
                                                              -------           --------         -------        ----------


Total EBITDA(b)                                               $    60           $     25         $     5        $       90
                                                              =======           ========         =======        ==========



                                                                                        Q1 2004
                                                              ------------------------------------------------------------
                                                               North             Europe           Asia
                                                              America             & SA           Pacific          Total
                                                              -------           --------         -------        ----------
                                                                                                    

Net income (loss)                                                                                               $       (2)

Minority interest                                                                                                        1

Income tax expense (benefit)                                                                                            (1)

Interest expense (net of interest capitalized)                                                                          35
                                                                                                                ----------

EBIT, Income before interest expense, income
taxes and minority interest (GAAP measure)                    $    30           $      -         $     3                33

Depreciation and amortization of other intangibles                 24                 17               4                45
                                                              -------           --------         -------        ----------

Total EBITDA                                                  $    54           $     17         $     7        $       78
                                                              =======           ========         =======        ==========



(a) Generally Accepted Accounting Principles

(b) EBITDA represents income before interest expense, income taxes, minority
interest and depreciation and amortization. EBITDA is not a calculation based
upon generally accepted accounting principles. The amounts included in the
EBITDA calculation, however, are derived from amounts included in the historical
statements of income data. In addition, EBITDA should not be considered as an
alternative to net income or operating income as an indicator of the company's
operating performance, or as an alternative to operating cash flows as a measure
of liquidity. Tenneco Automotive has presented EBITDA because it regularly
reviews EBITDA as a measure of the company's performance. In addition, Tenneco
Automotive believes its debt holders utilize and analyze our EBITDA for similar
purposes. Tenneco Automotive also believes EBITDA assists investors in comparing
a company's performance on a consistent basis without regard to depreciation and
amortization, which can vary significantly depending upon many factors. However,
the EBITDA measure presented may not always be comparable to similarly titled
measures reported by other companies due to differences in the components of
the calculation.


                                                                    ATTACHMENT 2


                               TENNECO AUTOMOTIVE
           RECONCILIATION OF GAAP(a) TO NON-GAAP EARNINGS MEASURES(b)
                                    Unaudited





                                                                       Q1 2005                        Q1 2004
                                                     ---------------------------------------  --------------------------------------
                                                     EBITDA (c)   EBIT  Net Income Per Share  EBITDA (c)  EBIT  Net Income Per Share
                                                     ---------- ------- ---------- ---------  ---------- -----  ---------- ---------
                                                                                                   
Earnings Measures                                    $    90    $   44    $   7    $  0.16     $ 78      $ 33    $  (2)    $ (0.05)

Adjustments (reflects non-GAAP measures):
    Restructuring and restructuring related expenses       3         3        2       0.04        5         5        3        0.07
    New Aftermarket customer changeover costs              -         -        -          -        6         6        3        0.08
    Consulting fees indexed to stock price                 -         -        -          -        3         3        2        0.05
                                                     --------   -------   ------  ---------   ------     -----  -------    --------
Non-GAAP earnings measures                           $    93    $   47    $   9    $  0.20    $  92      $ 47    $   6     $  0.15
                                                     ========   =======   ======  =========   ======     =====  =======    ========





                                                                                                      Q1 2005
                                                                            ------------------------------------------------------
                                                                               North        Europe        Asia
                                                                              America        & SA        Pacific        Total
                                                                            -------------  ----------  ------------  -------------
                                                                                                         
EBIT                                                                            $    37      $    5       $     2       $     44
    Restructuring and restructuring related expenses                                  2           1             -              3
                                                                                --------     -------      --------      ---------
Adjusted EBIT                                                                   $    39      $    6       $     2       $     47
                                                                                ========     =======      ========      =========



                                                                                                      Q1 2004
                                                                            ------------------------------------------------------
                                                                               North        Europe        Asia
                                                                              America        & SA        Pacific        Total
                                                                            -------------  ----------  ------------  -------------
                                                                                                         
EBIT                                                                            $   30           -          $   3        $    33
    Restructuring and restructuring related expenses                                 2           3              -              5
    New Aftermarket customer changeover costs                                        6           -              -              6
    Consulting fees indexed to stock price                                           1           1              1              3
                                                                                -------      ------         ------       --------
Adjusted EBIT                                                                   $   39       $   4          $   4        $    47
                                                                                =======      ======         ======       ========



(a) Generally Accepted Accounting Principles

(b) Tenneco Automotive presents the above reconciliation of GAAP to non-GAAP
earnings measures in order to reflect the results for the first quarters of 2005
and 2004 in a manner that allows a better understanding of the results of
operational activities separate from the financial impact of decisions made for
the long-term benefit of the company. Adjustments similar to the ones reflected
above have been recorded in earlier periods, and similar types of adjustments
can reasonably be expected to be recorded in future periods. Using only the
non-GAAP earnings measures to analyze earnings would have material limitations
because its calculation is based on the subjective determinations of management
regarding the nature and classification of events and circumstances that
investors may find material. Management compensates for these limitations by
utilizing both GAAP and non-GAAP earnings measures reflected above to understand
and analyze the results of the business. The company believes investors find the
non-GAAP information helpful in understanding the ongoing performance of
operations separate from items that may have a disproportionate positive or
negative impact on the company's financial results in any particular period.

(c) EBITDA represents income before interest expense, income taxes, minority
interest and depreciation and amortization. EBITDA is not a calculation based
upon generally accepted accounting principles. The amounts included in the
EBITDA calculation, however, are derived from amounts included in the historical
statements of income data. In addition, EBITDA should not be considered as an
alternative to net income or operating income as an indicator of the company's
operating performance, or as an alternative to operating cash flows as a measure
of liquidity. Tenneco Automotive has presented EBITDA because it regularly
reviews EBITDA as a measure of the company's performance. In addition, Tenneco
Automotive believes its debt holders utilize and analyze our EBITDA for similar
purposes. Tenneco Automotive also believes EBITDA assists investors in comparing
a company's performance on a consistent basis without regard to depreciation and
amortization, which can vary significantly depending upon many factors. However,
the EBITDA measure presented may not always be comparable to similarly titled
measures reported by other companies due to differences in the components of the
calculation.






                                                                    ATTACHMENT 2
                               TENNECO AUTOMOTIVE
           RECONCILIATION OF GAAP REVENUE TO NON-GAAP REVENUE MEASURES
                                    Unaudited



                                                                                        Q1 2005
                                                 -----------------------------------------------------------------------------------
                                                                                             Pass-through            Revenues
                                                                                                 Sales              Excluding
                                                                               Revenues        Excluding             Currency
                                                                 Currency     Excluding        Currency          and Pass-through
                                                  Revenues        Impact       Currency         Impact                Sales
                                                 ------------   -----------  -------------  ----------------   ---------------------
                                                                                                
North America Aftermarket
  Ride Control                                    $   91           $   --           $   91           $   --           $   91
  Exhaust                                             39               --               39               --               39
                                                  ------           ------           ------           ------           ------
  Total North America Aftermarket                    130               --              130               --              130

North America Original Equipment
  Ride Control                                       127               --              127               --              127
  Exhaust                                            248                2              246               67              179
                                                  ------           ------           ------           ------           ------
  Total North America Original Equipment             375                2              373               67              306

Total North America                                  505                2              503               67              436

Europe Aftermarket
  Ride Control                                        37                2               35               --               35
  Exhaust                                             45                2               43               --               43
                                                  ------           ------           ------           ------           ------
  Total Europe Aftermarket                            82                4               78               --               78

Europe Original Equipment
  Ride Control                                       109               11               98               --               98
  Exhaust                                            277               16              261               80              181
                                                  ------           ------           ------           ------           ------
  Total Europe Original Equipment                    386               27              359               80              279

South America                                         44                3               41                4               37

Total Europe & South America                         512               34              478               84              394

Asia                                                  42               --               42               13               29

Australia                                             47                1               46                4               42
                                                  ------           ------           ------           ------           ------

Total Asia Pacific                                    89                1               88               17               71

Total Tenneco Automotive                          $1,106           $   37           $1,069           $  168           $  901
                                                  ======           ======           ======           ======           ======




                                                                                      Q1 2004
                                                 -----------------------------------------------------------------------------------
                                                                                                                     Revenues
                                                                                                                    Excluding
                                                                               Revenues                              Currency
                                                                 Currency     Excluding      Pass-through        and Pass-through
                                                  Revenues        Impact       Currency          Sales                Sales
                                                 ------------   -----------  -------------  ----------------   ---------------------
                                                                                                
North America Aftermarket
  Ride Control                                    $   85           $--           $   85           $   --           $   85
  Exhaust                                             37            --               37               --               37
                                                  ------           ---           ------           ------           ------
  Total North America Aftermarket                    122            --              122               --              122

North America Original Equipment
  Ride Control                                       118            --              118               --              118
  Exhaust                                            263            --              263               88              175
                                                  ------           ---           ------           ------           ------
  Total North America Original Equipment             381            --              381               88              293

Total North America                                  503            --              503               88              415

Europe Aftermarket
  Ride Control                                        38            --               38               --               38
  Exhaust                                             42            --               42               --               42
                                                  ------           ---           ------           ------           ------
  Total Europe Aftermarket                            80            --               80               --               80

Europe Original Equipment
  Ride Control                                        85            --               85               --               85
  Exhaust                                            243            --              243               77              166
                                                  ------           ---           ------           ------           ------
  Total Europe Original Equipment                    328            --              328               77              251

South America                                         34            --               34                4               30

Total Europe & South America                         442            --              442               81              361

Asia                                                  39            --               39               13               26

Australia                                             49            --               49                4               45
                                                  ------           ---           ------           ------           ------

Total Asia Pacific                                    88            --               88               17               71

Total Tenneco Automotive                          $1,033           $--           $1,033           $  186           $  847
                                                  ======           ===           ======           ======           ======


Tenneco Automotive presents the above reconciliation of revenues in order to
reflect the trend in the company's sales, in various product lines and
geographical regions, separately from the effects of doing business in
currencies other than the U.S. dollar. Additionally, pass-through catalytic
converter sales include precious metals pricing, which may be volatile. While
Tenneco Automotive's original equipment customers assume the risk of this
volatility, it impacts reported revenue. Excluding pass-through catalytic
converter sales removes this impact. Tenneco Automotive uses this information to
analyze the trend in revenues before these factors. Tenneco Automotive believes
investors find this information useful in understanding period to period
comparisons in the company's revenues.