##### 



Exhibit 99.4
 Aggregate Annual Servicing Report
Capital Auto Receivables Asset Trust 2006-1
February 16, 2006 (inception) through December 31, 2006
 Original InputsTotal Pool Balance
    
    $
    3,448,419,727.08Class A-1 Notes Balance
    
    $
    510,000,000.00Class A-1 Notes Rate
    
    
    4.642
    %Class A-2a Notes Balance
    
    $
    450,000,000.00Class A-2a Notes Rate
    
    
    5.030
    %Class A-2b Notes Balance
    
    $
    1,060,000,000.00Class A-2b Notes Rate
    
    One Month LIBOR + .03%Class A-3 Notes Balance
    
    $
    650,000,000.00Class A-3 Notes Rate
    
    
    5.030
    %Class A-4 Notes Balance
    
    $
    252,835,000.00Class A-4 Notes Rate
    
    
    5.040
    %Class B Notes Balance
    
    $
    126,052,000.00Class B Notes Rate
    
    
    5.260
    %Class C Notes Balance
    
    $
    47,270,000.00Class C Notes Rate
    
    
    5.550
    %Class D Notes Balance
    
    $
    31,513,000.00Class D Notes Rate
    
    
    7.160
    %Overcollateralization
    
    $
    23,634,872.54Reserve Account Deposit
    
    $
    15,756,524.36Discount Rate
    
    
    8.85
    %Part I. CollectionsReceipts During the Period
    
    $
    1,444,653,367.99Principal on Adminstrative Repurchases
    
    
    5,098,451.76Principal on Warranty Repurchases
    
    
    -Liquidation Proceeds (Recoveries)
    
    
    8,394,420.98Schedule and Simple Interest Payments Advanced
    
    
    2,169,554.17Schedule Principal Advanced
    
    
    12,792,595.62Total Collections Available For the Period
    
    $
    1,473,108,390.52Beginning Pool Aggregate Principal Balance
    
    $
    3,448,419,727.08Ending Pool Aggregate Principal Balance
    
    $
    2,072,995,249.22Scheduled Principal Collection
    
    $
    1,027,313,092.23Beginning Aggregate Discounted Principal Balance
    
    $
    3,151,304,872.54Ending Aggregate Discounted Principal Balance
    
    $
    1,930,939,286.16Part II. Distributions to Noteholders and CertificateholdersTotal Collections
    
    $
    1,473,108,390.52Plus: Reserve Account Draw
    
    
    -Plus: Net Amount Due From Swap Counterparty
    
    
    2,267,570.20Less: Total Servicing Fee
    
    
    23,560,067.97Less: Net Amount Due to Swap Counterparty
    
    
    789,295.14Less: Monthly Interest Due to Noteholders
    
    
    117,516,198.36Less: Principal Due to Noteholders
    
    
    1,220,365,586.35Less: Reserve Account Deposit
    
    
    -Less: Accumulation Account Deposit
    
    
    -Equals Reserve Fund Excess to be released to CARI
    
    $
    113,144,812.90
 Page 1




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##### 



Aggregate Annual Servicing Report
Capital Auto Receivables Asset Trust 2006-1
February 16, 2006 (inception) through December 31, 2006
 Per $1000 ofClass A-1 Notes Distributable Amount
    
    
    
    
    
    
    Original PrincipalMonthly Interest
    
    $
    4,291,619.45
    
    
    
    
    8.414940Monthly Principal
    
    
    510,000,000.00
    
    
    
    
    1,000.000000Distributable Amount
    
    $
    514,291,619.45Class A-2a Notes Distributable AmountMonthly Interest
    
    $
    17,781,932.27
    
    
    
    
    39.515405Monthly Principal
    
    
    211,698,353.55
    
    
    
    
    470.440786Distributable Amount
    
    $
    229,480,285.82Class A-2b Notes Distributable AmountMonthly Interest
    
    $
    43,398,470.24
    
    
    
    
    40.941953Monthly Principal
    
    
    498,667,232.80
    
    
    
    
    470.440786Distributable Amount
    
    $
    542,065,703.04Class A-3 Notes Distributable AmountMonthly Interest
    
    $
    29,879,597.19
    
    
    
    
    45.968611Monthly Principal
    
    
    -
    
    
    
    
    -Distributable Amount
    
    $
    29,879,597.19Class A-4 Notes Distributable AmountMonthly Interest
    
    $
    11,645,580.10
    
    
    
    
    46.060000Monthly Principal
    
    
    -
    
    
    
    
    -Distributable Amount
    
    $
    11,645,580.10Class B Notes Distributable AmountMonthly Interest
    
    $
    6,059,389.64
    
    
    
    
    48.070555Monthly Principal
    
    
    -
    
    
    
    
    -Distributable Amount
    
    $
    6,059,389.64Class C Notes Distributable AmountMonthly Interest
    
    $
    2,397,573.79
    
    
    
    
    50.720833Monthly Principal
    
    
    -
    
    
    
    
    -Distributable Amount
    
    $
    2,397,573.79Class D Notes Distributable AmountMonthly Interest
    
    $
    2,062,035.68
    
    
    
    
    65.434445Monthly Principal
    
    
    -
    
    
    
    
    -Distributable Amount
    
    $
    2,062,035.68Total Servicing Fee
    
    $
    23,560,067.97
    
    
    
     
    6.832135LIBOR Rate effective for current Distribution PeriodFebruary
    
    
    4.57
    %March
    
    
    4.75
    %April
    
    
    4.90
    %May
    
    
    5.08
    %June
    
    
    5.20
    %July
    
    
    5.37
    %August
    
    
    5.33
    %September
    
    
    5.33
    %October
    
    
    5.32
    %November
    
    
    5.32
    %December
    
    
    5.35
    %
 Page 2




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##### 



Aggregate Annual Servicing Report
Capital Auto Receivables Asset Trust 2006-1
February 16, 2006 (inception) through December 31, 2006
 Part III. Payment Ahead and AdvancesPayment Ahead Servicing AccountBeginning Payment Ahead Balance
    
    $
    5,166,061.63Less: Payments Applied
    
    
    17,468,705.92Current Period Payments Ahead Received
    
    
    16,323,231.59Ending Payment Ahead Balance
    
    $
    4,020,587.30Advance AccountBeginning Outstanding Unreimbursed Scheduled Principal and Interest Advances
    
    $
    -Beginning Outstanding Unreimbursed Simple Interest Advances
    
    
    -Scheduled Principal and Interest Advances
    
    
    13,806,885.71Simple Interest Advances
    
    
    1,155,264.08Reimbursement of Previous Scheduled Principal and Interest Advances
    
    
    10,106,209.40Reimbursement of Previous Simple Interest Advances
    
    
    621,237.74Ending Outstanding Unreimbursed Scheduled Principal and Interest Advances
    
    $
    3,700,676.31Ending Outstanding Unreimbursed Simple Interest Advances
    
    $
    534,026.34If the full scheduled payment due is not received by the end of month in which it
was due the servicer will advance the shortfall for receivables that are not in default.
The servicer will be reimbursed for any advances from subsequent payments or collections
relating to that receivable. At the time the servicer determines that advances will not
be recoverable from payments on that receivable the servicer is entitled to recoup its
advance from collections of other receivables.Part IV. Balances & Principal FactorsBeginning of Period
    
    End of PeriodTotal Pool Balance
    
    $
    3,448,419,727.08
    
    
    $
    2,072,995,249.22Total Pool Factor
    
    
    1.0000000
    
    
    
    0.6011435Class A-1 Notes Balance
    
    $
    510,000,000.00
    
    
    $
    -Class A-1 Notes Principal Factor
    
    
    1.0000000
    
    
    
    -Class A-2a Notes Balance
    
    $
    450,000,000.00
    
    
    $
    238,301,646.45Class A-2a Notes Principal Factor
    
    
    1.0000000
    
    
    
    0.5295592Class A-2b Notes Balance
    
    $
    1,060,000,000.00
    
    
    $
    561,332,767.20Class A-2b Notes Principal Factor
    
    
    1.0000000
    
    
    
    0.5295592Class A-3 Notes Balance
    
    $
    650,000,000.00
    
    
    $
    650,000,000.00Class A-3 Notes Principal Factor
    
    
    1.0000000
    
    
    
    1.0000000Class A-4 Notes Balance
    
    $
    252,835,000.00
    
    
    $
    252,835,000.00Class A-4 Notes Principal Factor
    
    
    1.0000000
    
    
    
    1.0000000Class B Notes Balance
    
    $
    126,052,000.00
    
    
    $
    126,052,000.00Class B Notes Principal Factor
    
    
    1.0000000
    
    
    
    1.0000000Class C Notes Balance
    
    $
    47,270,000.00
    
    
    $
    47,270,000.00Class C Notes Principal Factor
    
    
    1.0000000
    
    
    
    1.0000000Class D Notes Balance
    
    $
    31,513,000.00
    
    
    $
    31,513,000.00Class D Notes Principal Factor
    
    
    1.0000000
    
    
    
    1.0000000Pool Statistics
    
    Inception
    
    End of PeriodNumber of Accounts
    
    
    211,904
    
    
    
    164,207Weighted Average Coupon
    
    
    3.85
    %
    
    
    3.92
    %Weighted Average Remaining Term
    
    
    45.44
    
    
    
    36.26Weighted Average Age
    
    
    14.99
    
    
    
    25.32
 Page 3




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##### 



Aggregate Annual Servicing Report
Capital Auto Receivables Asset Trust 2006-1
February 16, 2006 (inception) through December 31, 2006
 Part V. Reserve AccountPer $1000 ofOriginal PrincipalBeginning Reserve Account Balance
    
    
    
    
    
    $
    15,756,524.36Draw 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
    
    
    
    
    
    $
    15,756,524.36Preceding Collection PeriodSpecified Reserve Account Balance
    
    
    
    
    
    $
    15,756,524.36Reserve Account Balance
    
    
    
    
    
    $
    15,756,524.36Current Collection PeriodSpecified Reserve Account Balance
    
    
    
    
    
    $
    15,756,524.36Reserve Account Balance
    
    
    
    
    
    $
    15,756,524.36Part VI. Carryover ShortfallPer $1000 ofOriginal PrincipalNoteholders Interest Carryover Shortfall
    
    
    
    
    
    $
    -
    
    
    
    
    -Noteholders Principal Carryover Shortfall
    
    
    
    
    
    $
    -
    
    
    
    
    -Part VII. Charge Off and Delinquency RatesCurrent Period
    
    
    Current PeriodCharge Off Rate
    
    Average Receivables
    
    Net Charge-Offs
    
    
    Loss RateJanuary 2006
    
    $
    3,398,652,360.84
    
    
    $
    -
    
    
    
    
    0.0000
    %February 2006
    
    $
    3,288,639,626.31
    
    
    $
    2,982.00
    
    
    
    
    0.0011
    %March 2006
    
    $
    3,162,079,997.70
    
    
    $
    42,322.34
    
    
    
    
    0.0161
    %April 2006
    
    $
    3,036,884,251.51
    
    
    $
    260,597.58
    
    
    
    
    0.1030
    %May 2006
    
    $
    2,913,693,591.75
    
    
    $
    626,268.24
    
    
    
    
    0.2579
    %June 2006
    
    $
    2,788,457,463.31
    
    
    $
    362,678.18
    
    
    
    
    0.1561
    %July 2006
    
    $
    2,664,916,823.90
    
    
    $
    521,295.49
    
    
    
    
    0.2347
    %August 2006
    
    $
    2,543,656,875.63
    
    
    $
    841,393.69
    
    
    
    
    0.3969
    %September 2006
    
    $
    2,430,807,245.35
    
    
    $
    884,969.56
    
    
    
    
    0.4369
    %October 2006
    
    $
    2,322,018,546.55
    
    
    $
    658,321.39
    
    
    
    
    0.3402
    %November 2006
    
    $
    2,217,385,516.62
    
    
    $
    850,367.92
    
    
    
    
    0.4602
    %December 2006
    
    $
    2,120,166,533.92
    
    
    $
    572,651.51
    
    
    
    
    0.3241
    %Original
    
    Cumulative
    
    
    CumulativeReceivable Balance
    
    Net Charge-Offs
    
    
    Loss RateTotal Cumulative Charge offs
    
    $
    3,348,884,994.59
    
    
    $
    5,623,847.90
    
    
    
    
    0.1679
    %Delinquency Rate
    
    Total Accounts
    
    Accounts Over 60
    
    
    % DelinquentJanuary 2006
    
    
    211,001
    
    
    
    11
    
    
    
    
    0.0052
    %February 2006
    
    
    208,158
    
    
    
    232
    
    
    
    
    0.1115
    %March 2006
    
    
    204,555
    
    
    
    321
    
    
    
    
    0.1569
    %April 2006
    
    
    201,320
    
    
    
    288
    
    
    
    
    0.1431
    %May 2006
    
    
    197,543
    
    
    
    360
    
    
    
    
    0.1822
    %June 2006
    
    
    193,454
    
    
    
    433
    
    
    
    
    0.2238
    %July 2006
    
    
    188,737
    
    
    
    525
    
    
    
    
    0.2782
    %August 2006
    
    
    184,264
    
    
    
    516
    
    
    
    
    0.2800
    %September 2006
    
    
    179,658
    
    
    
    543
    
    
    
    
    0.3022
    %October 2006
    
    
    173,176
    
    
    
    520
    
    
    
    
    0.3003
    %November 2006
    
    
    168,330
    
    
    
    478
    
    
    
    
    0.2840
    %December 2006
    
    
    164,207
    
    
    
    504
    
    
    
    
    0.3069
    %Delinquency Stratification (@ 12/31/06)
    
    Total Accounts
    
    Total $31 - 60 days
    
    
    3,810
    
    
    $
    53,748,397.3361 - 90 days
    
    
    480
    
    
    $
    7,424,689.08> 90 days
    
    
    24
    
    
    $
    394,750.61
  Page 4




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##### 



Aggregate Annual Servicing Report
Capital Auto Receivables Asset Trust 2006-1
February 16, 2006 (inception) through December 31, 2006
 Part VIII. Prepayment Rate
 Month
    
    Prepayment Rate1
    
    0.488%2
    
    1.143%3
    
    1.574%4
    
    1.173%5
    
    1.588%6
    
    1.443%7
    
    1.649%8
    
    1.467%9
    
    1.236%10
    
    1.363%11
    
    1.151%12
    
    1.032%
 Part IX. Early Amortization Events / Portfolio Performance Conditions/ Trigger Events
 Early Amortization Events1)
    
    Was the Reserve Account Balance less than the Specified
Reserve Account Balance for Two Consecutive Months?
    
    No2)
    
    Has an Event of Default occurred?
    
    No3)
    
    Has a Servicer Default occurred?
    
    No
  Page 5