Capital Auto Receivables Asset Trust 2005-1 10-K 2005 FY Annual report

Exhibit 99.1

Aggregate Annual Servicing Report
Capital Auto Receivables Asset Trust 2005-1
June 2, 2005 (inception) through December 31, 2005

Original Inputs
Total Pool Balance	$	3,313,888,879.69
Class A-1 Notes Balance	$	550,000,000.00
Class A-1 Notes Rate	One Month LIBOR + 0.01%
Class A-2a Notes Balance	$	450,000,000.00
Class A-2a Notes Rate	One Month LIBOR + 0.04%
Class A-2b Notes Balance	$	250,000,000.00
Class A-2b Notes Rate		3.730	%
Class A-3 Notes Balance	$	600,000,000.00
Class A-3 Notes Rate	One Month LIBOR + 0.06%
Class A-4 Notes Balance	$	760,000,000.00
Class A-4 Notes Rate		4.050	%
Class A-5 Notes Balance	$	229,825,000.00
Class A-5 Notes Rate	One Month LIBOR + 0.10%
Class B Notes Balance	$	122,803,000.00
Class B Notes Rate	One Month LIBOR + 0.375%
Class C Notes Balance	$	46,051,000.00
Class C Notes Rate		4.730	%
Class D Notes Balance	$	30,701,000.00
Class D Notes Rate		6.500	%
Overcollateralization	$	30,701,224.17
Reserve Account Deposit	$	15,350,406.12
Discount Rate		7.50	%
Part I. Collections
Receipts During the Period	$	903,735,718.70
Principal on Repurchased Contracts		48,704,081.30
Liquidation Proceeds (Recoveries)		5,050,689.11
Schedule and Simple Interest Payments Advanced		4,288,288.67
Schedule Principal Advanced		8,655,340.86
Total Collections Available For the Period	$	970,434,118.64
Beginning Pool Aggregate Principal Balance	$	3,313,888,879.69
Ending Pool Aggregate Principal Balance	$	2,419,791,935.85
Scheduled Principal Collection	$	730,632,672.94
Beginning Aggregate Discounted Principal Balance	$	3,070,081,224.17
Ending Aggregate Discounted Principal Balance	$	2,261,612,942.70

Aggregate Annual Servicing Report
Capital Auto Receivables Asset Trust 2005-1
June 2, 2005 (inception) through December 31, 2005

Part II. Distributions to Noteholders and Certificateholders
Total Collections	$	970,434,118.64
Plus: Reserve Account Draw		—
Plus: Net Amount Due From Swap Counterparty		1,393,860.52
Less: Total Servicing Fee		35,674,819.61
Less: Net Amount Due to Swap Counterparty		1,683,679.56
Less: Monthly Interest Due to Noteholders		64,759,229.29
Less: Principal Due to Noteholders		808,468,281.47
Less: Reserve Account Deposit		—
Less: Accumulation Account Deposit		—
Equals Reserve Fund Excess to be released to CARI	$	61,241,969.22
				Per $1000 of
Class A-1 Notes Distributable Amount				Original Principal
Monthly Interest	$	4,054,091.91			7.356632
Monthly Principal		550,000,000.00			1,000.000000
Distributable Amount	$	554,054,091.91			—
Class A-2a Notes Distributable Amount
Monthly Interest	$	10,214,615.84			22.684702
Monthly Principal		166,158,180.95			369.240402
Distributable Amount	$	176,372,796.79			—
Class A-2b Notes Distributable Amount
Monthly Interest	$	5,505,053.46			22.020214
Monthly Principal		92,310,100.53			369.240402
Distributable Amount	$	97,815,153.99			—
Class A-3 Notes Distributable Amount
Monthly Interest	$	14,504,507.99			24.159736
Monthly Principal		—			—
Distributable Amount	$	14,504,507.99			—
Class A-4 Notes Distributable Amount
Monthly Interest	$	19,066,500.00			25.087500
Monthly Principal		—			—
Distributable Amount	$	19,066,500.00			—
Class A-5 Notes Distributable Amount
Monthly Interest	$	5,614,308.62			7.034531
Monthly Principal		—			—
Distributable Amount	$	5,614,308.62			—
Class B Notes Distributable Amount
Monthly Interest	$	3,214,728.34			26.163486
Monthly Principal		—			—
Distributable Amount	$	3,214,728.34			—
Class C Notes Distributable Amount
Monthly Interest	$	1,349,281.50			29.299722
Monthly Principal		—			—
Distributable Amount	$	1,349,281.50			—
Class D Notes Distributable Amount
Monthly Interest	$	1,236,141.63			40.263888
Monthly Principal		—			—
Distributable Amount	$	1,236,141.63			—
Total Servicing Fee	$	35,674,819.61			10.765243
LIBOR Rate effective for current Distribution Period
May		3.13	%
June		3.22	%
July		3.39	%
August		3.57	%
September		3.77	%
October		3.97	%
November		4.12	%
December		4.37	%

Aggregate Annual Servicing Report
Capital Auto Receivables Asset Trust 2005-1
June 2, 2005 (inception) through December 31, 2005

Part III. Payment Ahead and Advances

Payment Ahead Servicing Account
Beginning Payment Ahead Balance	$	4,381,171.98
Less: Payments Applied		12,152,613.67
Current Period Payments Ahead Received		12,891,908.90
Ending Payment Ahead Balance	$	5,120,467.21
Advance Account
Beginning Outstanding Unreimbursed Scheduled Principal and Interest Advances	$	—
Beginning Outstanding Unreimbursed Simple Interest Advances		—
Scheduled Principal and Interest Advances		10,499,610.51
Simple Interest Advances		2,444,019.02
Reimbursement of Previous Scheduled Principal and Interest Advances		6,712,928.96
Reimbursement of Previous Simple Interest Advances		124,379.45
Ending Outstanding Unreimbursed Scheduled Principal and Interest Advances	$	3,786,681.55
Ending Outstanding Unreimbursed Simple Interest Advances	$	2,319,639.57
Part IV. Balances & Principal Factors
	Beginning of Period		End of Period
Total Pool Balance	$	3,313,888,879.69	$	2,419,791,935.85
Total Pool Factor		1.0000000		0.7301971
Class A-1 Notes Balance	$	550,000,000.00	$	—
Class A-1 Notes Principal Factor		1.0000000		—
Class A-2a Notes Balance	$	450,000,000.00	$	283,841,819.06
Class A-2a Notes Principal Factor		1.0000000		0.6307596
Class A-2b Notes Balance	$	250,000,000.00	$	157,689,899.48
Class A-2b Notes Principal Factor		1.0000000		0.6307596
Class A-3 Notes Balance	$	600,000,000.00	$	600,000,000.00
Class A-3 Notes Principal Factor		1.0000000		1.0000000
Class A-4 Notes Balance	$	760,000,000.00	$	760,000,000.00
Class A-4 Notes Principal Factor		1.0000000		1.0000000
Class A-5 Notes Balance	$	229,825,000.00	$	229,825,000.00
Class A-5 Notes Principal Factor		1.0000000		1.0000000
Class B Notes Balance	$	122,803,000.00	$	122,803,000.00
Class B Notes Principal Factor		1.0000000		1.0000000
Class C Notes Balance	$	46,051,000.00	$	46,051,000.00
Class C Notes Principal Factor		1.0000000		1.0000000
Class D Notes Balance	$	30,701,000.00	$	30,701,000.00
Class D Notes Principal Factor		1.0000000		1.0000000
Pool Statistics — Inception			Inception
Number of Accounts				189,292
Weighted Average Coupon				4.24	%
Weighted Average Remaining Term				47.87
Weighted Average Age				12.75
Pool Statistics — December			December
Number of Accounts				162,385
Weighted Average Coupon				4.01	%
Weighted Average Remaining Term				41.15
Weighted Average Age				20.33

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Aggregate Annual Servicing Report
Capital Auto Receivables Asset Trust 2005-1
June 2, 2005 (inception) through December 31, 2005

Part V. Reserve Account

					Per $1000 of Original Principal
Beginning Reserve Account Balance			$	15,350,406.12
Draw for Servicing Fee				—		—
Draw for Class A-1a Notes Distributable Amount				—		—
Draw for Class A-1b Notes Distributable Amount				—		—
Draw for Class A-2 Notes Distributable Amount				—		—
Draw for Class A-3 Notes Distributable Amount				—		—
Draw for Class A-4 Notes Distributable Amount				—		—
Draw for Class B Notes Distributable Amount				—		—
Draw for Class C Notes Distributable Amount				—		—
Draw for Class D Notes Distributable Amount				—		—
Additions to Reserve Account (for Accumulation Account)				—		—
Additions to Reserve Account				—		—
Releases from Reserve Account				—		—
Ending Reserve Account Balance			$	15,350,406.12
Early Amortization Trigger:
Reserve Account Balance is less than the Specified Reserve Account Balance for Two Consecutive Months
Preceding Collection Period
Specified Reserve Account Balance			$	15,350,406.12
Reserve Account Balance			$	15,350,406.12
Current Collection Period
Specified Reserve Account Balance			$	15,350,406.12
Reserve Account Balance			$	15,350,406.12
Part VI. Carryover Shortfall
					Per $1000 of Original Principal
Noteholders’ Interest Carryover Shortfall			$	—		—
Noteholders’ Principal Carryover Shortfall			$	—		—
Part VII. Charge Off and Delinquency Rates
Charge Off Rate	Average Receivables		Net Charge-Offs		Loss Rate
May 2005	$	3,265,692,014.43	$	—		0.0000	%
June 2005	$	3,150,004,758.19	$	45,775.55		0.0174	%
July 2005	$	3,022,592,977.10	$	358,403.81		0.1423	%
August 2005	$	2,900,272,072.86	$	764,218.55		0.3162	%
September 2005	$	2,782,587,827.89	$	815,133.27		0.3515	%
October 2005	$	2,674,017,966.22	$	955,441.68		0.4288	%
November 2005	$	2,570,508,246.07	$	1,291,500.48		0.6029	%
December 2005	$	2,470,037,796.31	$	1,658,951.49		0.8060	%
Average Loss Rate						0.3331	%
Delinquency Rate*	Total Accounts		Accounts Over 60		% Delinquent
May 2005		188,051		10		0.0053	%
June 2005		183,889		380		0.2066	%
July 2005		180,398		553		0.3065	%
August 2005		176,523		649		0.3677	%
September 2005*		173,080		724		0.4183	%
October 2005*		169,160		789		0.4664	%
November 2005*		165,693		698		0.4213	%
December 2005*		162,385		800		0.4927	%
Three Month Average Delinquency Rate						0.3356	%
* Includes delinquencies on Hurricane accounts held in special handling. The delinquency detail on the Hurricane accounts only is as follows:
Hurricane Accounts
September Accounts Over 60		47
October Accounts Over 60		75
November Accounts Over 60		88
December Accounts Over 60		137
December Delinquency Stratification	Total Accounts		Total $
31 - 60 days		4,802	$	72,520,618.76
61 - 90 days		655	$	10,409,829.79
> 90 days		145	$	2,553,013.42

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Aggregate Annual Servicing Report
Capital Auto Receivables Asset Trust 2005-1
June 2, 2005 (inception) through December 31, 2005

Part VIII. Prepayment Rate

Month	Prepayment Rate
1		0.728%
2		1.980%
3		1.570%
4		1.811%
5		1.410%
6		1.330%
7		1.206%
8		1.275%

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