<Page>



Hyundai Auto Receivables Trust 2003-A
Monthly Servicing Report
- ---------------------------------------------------------------------------------------------------------------
                                                                                                  
Collection Period                                                                                    May, 2004
Distribution Date                                                                                     06/15/04
Transaction Month                                                                                            7
30/360 Days                                                                                                 30
Actual/360 Days                                                                                             29
- ---------------------------------------------------------------------------------------------------------------


I.  ORIGINAL DEAL PARAMETERS
- ----------------------------

Cut off Date:                           September 30, 2003
Closing Date:                             November 7, 2003



                                            Dollars             Units            WAC           WAM
                                            -------             -----            ---           ---
                                                                                     
Original Pool Balance:               $ 815,463,348.54            52,845         7.296%           56




                                     Dollar Amount             % of Pool      Coupon Rate               Final Payment Date
                                     -------------             ---------      -----------              --------------------
                                                                                            
   Class A-1 Notes                   $ 170,000,000.00            20.847%           1.1100%                November 15, 2004
   Class A-2 Notes                   $ 241,000,000.00            29.554%           1.5600%               September 15, 2006
   Class A-3 Notes                   $ 130,000,000.00            15.942%           2.3300%                November 15, 2007
   Class A-4 Notes                   $ 120,618,000.00            14.791%           3.0200%                 October 15, 2010
   Class B Notes                     $  39,034,000.00             4.787%           2.9900%                 October 15, 2010
   Class C Notes                     $  11,710,000.00             1.436%           3.1900%                 October 15, 2010
   Class D Notes                     $  40,985,000.00             5.026%           4.0600%                 October 15, 2010
                                    -------------------------------------
Total Securities                     $ 753,347,000.00            92.383%

   Overcollateralization             $  27,323,343.23             3.351%
   YSOA                              $  34,793,005.31             4.267%
                                    -------------------------------------
Total Original Pool Balance          $ 815,463,348.54            100.00%

- --------------------------------------------------------------------------------------------------------------------------------



II.  POOL BALANCE AND PORTFOLIO INFORMATION
- -------------------------------------------


                                     -------------------------------------------------------------------------------------------
                                             Beginning of Period                 Ending of Period                    Change
                                     -------------------------------------------------------------------------------------------
                                           Balance        Pool Factor         Balance        Pool Factor
                                           -------        -----------         -------        -----------
                                                                                                  
   Class A-1 Notes                   $   8,007,782.20      0.0471046     $      -                    -           $ 8,007,782.20
   Class A-2 Notes                   $ 241,000,000.00      1.0000000     $230,291,418.80      0.9555661          $ 10,708,581.20
   Class A-3 Notes                   $ 130,000,000.00      1.0000000     $130,000,000.00      1.0000000          $         -
   Class A-4 Notes                   $ 120,618,000.00      1.0000000     $120,618,000.00      1.0000000          $         -
   Class B Notes                     $  39,034,000.00      1.0000000     $ 39,034,000.00      1.0000000          $         -
   Class C Notes                     $  11,710,000.00      1.0000000     $ 11,710,000.00      1.0000000          $         -
   Class D Notes                     $  40,985,000.00      1.0000000     $ 40,985,000.00      1.0000000          $         -
                                     -------------------------------------------------------------------------------------------
Total Securities                     $ 591,354,782.20      0.7849700     $572,638,418.80      0.7601257          $ 18,716,363.40


Weighted Avg. Coupon (WAC)                      7.24%                                                                      7.23%
Weighted Avg. Remaining Maturity (WARM)         49.45                                                                      48.52
Pool Receivables Balance             $ 669,497,457.78                                                            $647,942,064.82
Remaining Number of Receivables                48,690                                                                     47,982

Adjusted Pool Balance                                                                                            $622,838,891.46
- --------------------------------------------------------------------------------------------------------------------------------


III.  COLLECTIONS


                                                                                                              
Principal:
     Principal Collections                                                                                       $ 20,448,412.60
     Repurchased Contract Proceeds Related to Principal                                                          $       -
     Liquidation Proceeds                                                                                        $    150,413.73
     Recoveries from Prior Month Charge-Offs                                                                     $       -
                                                                                                                 ---------------
Total Principal Collections                                                                                      $ 20,598,826.33

Interest:
     Interest Collections                                                                                        $  3,902,989.58
     Interest on Repurchase Principal                                                                            $        -
                                                                                                                 ---------------
Total Interest Collections                                                                                       $  3,902,989.58
                                                                                                                 $ 24,516,961.39
Reserve Account Interest                                                                                         $      4,291.30

Total Collections                                                                                                $ 24,506,107.21



                                     1 of 3


<Page>



Hyundai Auto Receivables Trust 2003-A
Monthly Servicing Report
- ---------------------------------------------------------------------------------------------------------------
                                                                                                  
Collection Period                                                                                    May, 2004
Distribution Date                                                                                     06/15/04
Transaction Month                                                                                            7
30/360 Days                                                                                                 30
Actual/360 Days                                                                                             29
- ---------------------------------------------------------------------------------------------------------------





IV.  DISTRIBUTIONS


                                                                                       
     Total Collections                                                                    $ 24,506,107.21
     Reserve Account Release                                                              $        -
     Reserve Account Draw                                                                 $        -
                                                                                          ----------------
Total Available for Distribution                                                          $ 24,506,107.21





                                               Amount Due             Amount Paid
                                               ----------             -----------
                                                                                 
1. Servicing Fee @1.00%:
     Servicing Fee Due                        $ 557,914.55           $ 557,914.55         $    557,914.55

2.  Class A Noteholders Interest:

     Class A-1 Notes                            $ 7,160.29           $   7,160.29
     Class A-2 Notes                          $ 313,300.00           $ 313,300.00
     Class A-3 Notes                          $ 252,416.67           $ 252,416.67
     Class A-4 Notes                          $ 303,555.30           $ 303,555.30
                                            ---------------          -------------
          Total Class A interest:             $ 876,432.26           $ 876,432.26         $    876,432.26

3.  First Priority Principal Distribution:    $     -                $     -              $        -

4.  Class B Noteholders Interest:             $  97,259.72           $ 97,259.72          $     97,259.72

5.  Second Priority Principal Distribution:   $     -                $     -              $        -

6.  Class C Noteholders Interest:             $ 31,129.08            $ 31,129.08          $     31,129.08

7.  Third Priority Principal Distribution:    $     -                $     -              $        -

8.  Class D Noteholders Interest:             $ 138,665.92           $ 138,665.92         $    138,665.92
          Available Funds Remaining:                                                      $ 22,804,705.68

9.   Regular Principal Distribution Amount:                                               $ 18,716,363.40




                                                            Distributable Amount           Paid Amount
                                                            --------------------           -----------
                                                                                    
     Class A-1 Notes                                                                      $ 8,007,782.20
     Class A-2 Notes                                                                      $10,708,581.20
     Class A-3 Notes                                                                      $       -
     Class A-4 Notes                                                                      $       -
                                                                                          ---------------
          Class A Notes Total:                               $ 99,512,355.44              $ 18,716,363.40
          Class B Notes Total:                               $ 33,628,012.76              $       -
          Class C Notes Total:                               $ 22,977,531.09              $       -
          Class D Notes Total:                               $       -                    $       -
                                                                                          ---------------
               Total Noteholders Principal                                                $ 18,716,363.40

10.  Available Amounts Remaining to reserve account                                       $  4,088,342.28

11.  Trust Fees and Expenses                                                              $      -
12.  Remaining Available Collections Released to Cetificateholder                         $  4,088,342.28
- ---------------------------------------------------------------------------------------------------------




V.  YIELD SUPPLEMENT OVERCOLLATERALIZATION AMOUNT (YSOA)


                                                                                      
Beginning Period Required Amount                                                         $ 26,228,513.33
Beginning Period Amount                                                                  $ 26,228,513.33
Current Period Amortization                                                              $  1,125,339.97
Ending Period Required Amount                                                            $ 25,103,173.36
Ending Period Amount                                                                     $ 25,103,173.36
Next Distribution Date Required Amount                                                   $ 24,002,803.55


                                     2 of 3


<Page>



Hyundai Auto Receivables Trust 2003-A
Monthly Servicing Report
- ---------------------------------------------------------------------------------------------------------------
                                                                                                  
Collection Period                                                                                    May, 2004
Distribution Date                                                                                     06/15/04
Transaction Month                                                                                            7
30/360 Days                                                                                                 30
Actual/360 Days                                                                                             29
- ---------------------------------------------------------------------------------------------------------------



VI.  RESERVE ACCOUNT


                                                                                              
Beginning Period Required Amount                                                                 $ 5,855,027.57
Beginning Period Amount                                                                          $ 5,855,027.57
Current Period Release to Collection Account                                                     $       -
Current Period Deposit                                                                           $ 4,088,342.28
Current Period Release to Depositor                                                              $ 4,088,342.27
Ending Period Required Amount (0.75% of APB of cut-off date)                                     $ 5,855,027.57
Ending Period Amount                                                                             $ 5,855,027.58

- ---------------------------------------------------------------------------------------------------------------



VII.  OVERCOLLATERALIZATION


                                                            Beginning                Ending                  Target
                                                            ---------                ------                  ------
                                                                                                    
Overcollateralization Amount                                 $ 51,914,162.25        $ 50,200,472.66          $ 50,200,472.66
Overcollateralization as a % of Original Pool                 6.37%                  6.16%                   6.16%
Overcollateralization as a % of Current Pool                  8.01%                  7.75%                   7.75%

- -----------------------------------------------------------------------------------------------------------------------------




VIII.  DELINQUENCY AND NET LOSS ACTIVITY



                                                                Units Percent    Units     Dollars Percent       Dollar Amount
                                                                -------------    -----     ---------------       -------------
                                                                                                     
     Current                                                       98.26%         47,146         98.28%          $ 636,828,741.89
     30 - 59 Days                                                   1.37%            655          1.39%          $   8,980,986.28
     60 - 89 Days                                                   0.29%            140          0.27%          $   1,778,404.30
     90 + Days                                                      0.09%             41          0.05%          $     353,932.35
                                                                -----------------------------------------------------------------
                                                                                  47,982                         $ 647,942,064.82
Total
Delinquent Receivables 60+ days past due                            0.38%            181          0.33%          $   2,132,336.65
Delinquency Ratio 60+ for 1st Preceding Collection Period           0.29%            140          0.24%          $   1,614,228.08
Delinquency Ratio 60+ for 2nd Preceding Collection Period           0.23%            114          0.17%          $   1,159,952.00
                                                                    -----                         -----
Three-Month Average Delinquency Ratio                               0.30%                         0.25%

Repossession in Current Period                                                                                                 87
Repossession Inventory                                                                                                        110

Charge-Offs
     Gross Principal of Charge-Off for Current Period                                                             $  1,106,980.36
     Recoveries for Current Period                                                                                $   (150,413.73)
     Recoveries on Previous Charge-off Contracts                                                                  $        -
                                                                                                                  ---------------
     Net Charge-offs for Current Period                                                                           $    956,566.63

     Average Pool Balance for Current Period                                                                      $658,719,761.30

Net Loss Ratio                                                                                                              1.74%
Net Loss Ratio for 1st Preceding Collection Period                                                                          1.93%
Net Loss Ratio for 2nd Preceding Collection Period                                                                          1.64%
                                                                                                                  ---------------
Three-Month Average Net Loss Ratio for Current Period                                                                       1.77%

Cumulative Net Losses for All Periods                                                                             $  4,383,954.30
Cumulative Net Losses as a % of Initial Pool Balance                                                                        0.54%



The undersigned hereby represents and warrants that the foregoing is a true and
accurate accounting with respect to the outstandings as of May 31, 2004, in
accordance with the Sale and Servicing Agreement dated as of November 7, 2003,
and that all the representations and warranties set forth in Section 3.01 and
made by HMFC, as Seller, are hereby restated and reaffirmed.


                                     HYUNDAI MOTOR FINANCE COMPANY, AS SERVICER



                                     By: /s/ David A. Hoeller
                                         -------------------------------------
                                     Name: David A. Hoeller
                                     Title: Vice President, Finance
                                     Date: June 10, 2004



                                     3 of 3




                             SERVICER'S CERTIFICATE



                          Collection Period: May, 2004

                        Distribution Date: June 15, 2004

                      Hyundai Auto Receivables Trust 2003-A


         The undersigned certifies that he is the Vice President, Finance, of
Hyundai Motor Finance Company, a California corporation ("HMFC") and that as
such he is duly authorized to execute and deliver this certificate on behalf of
HMFC pursuant to Section 4.09 of the Sales and Servicing Agreement dated
November 7, 2003, among HMFC, as Seller and Servicer, Wells Fargo Bank
Minnesota, as Indenture Trustee, Hyundai ABS Funding Corporation, as the
Depositor and, the Hyundai Auto Receivables Trust 2003-A, as Issuer (the "Sales
and Servicing Agreement") (all capitalized terms used herein without definition
have the respective meanings specified in the Sales and Servicing Agreement) and
further certifies that:

         1.    The Servicer's report for the period from May 1, 2004, to May 31,
               2004, attached to this certificate is complete and accurate and
               contains all information required by Section 4.09 of the Sales
               and Servicing Agreement; and

         2.    As of May 31, 2004, no Event of Servicing Termination or event
               that with notice or lapse of time or both would become an Event
               of Servicing Termination has occurred.

         IN WITNESS WHEREOF, I have affixed hereunto my signature this 10TH DAY
OF JUNE 2004.

                               HYUNDAI MOTOR FINANCE COMPANY, as Servicer
                               a California corporation



                               By:  /s/ David A. Hoeller
                                  -----------------------------------------
                                    David A. Hoeller
                                    Vice President, Finance