##### 



Exhibit 99.1 Volkswagen
Auto Loan Enhanced Trust 2005-1
MONTHLY SERVICER CERTIFICATE
For the collection period ended 12-26-2005
    
    
    
    PAGE 1
 A.
    
    DATES
    
    
    Begin
    
    
    End
    
    
    # days1
    
    Determination Date
    
    
    
    
    
    

1/18/20062
    
    Payment Date
    
    
    
    
    
    
    1/20/20063
    
    Collection Period
    
    

11/27/2005
    
    
    
    12/26/2005
    
    
    
    304
    
    Monthly Interest Period - Actual/360
    
    
    12/20/2005
    
    
    
    1/19/2006
    
    
    
    315
    
    Monthly Interest - 30/360
    
    
    
    
    
    
    
    
    
    
    30
 B.
    
    SUMMARYInitial Balance
    
    Beginning Balance
    
    Principal Payment
    
    Ending Balance
    
    Note Factor6
    
    Class A-1 Notes
    
    
    285,000,000.00
    
    
    
    249,424,312.02
    
    
    
    36,135,639.50
    
    
    
    213,288,672.52
    
    
    
    0.74838137
    
    Class A-2 Notes
    
    
    288,000,000.00
    
    
    
    288,000,000.00
    
    
    
    
    
    
    
    288,000,000.00
    
    
    
    1.00000008
    
    Class A-3 Notes
    
    
    435,000,000.00
    
    
    
    435,000,000.00
    
    
    
    
    
    
    
    435,000,000.00
    
    
    
    1.00000009
    
    Class A-4 Notes
    
    
    226,188,000.00
    
    
    
    226,188,000.00
    
    
    
    
    
    
    
    226,188,000.00
    
    
    
    1.000000010
    
    Subordinated Certificate
    
    
    28,408,655.00
    
    
    
    28,408,655.00
    
    
    
    
    
    
    
    28,408,655.00
    
    
    
    1.000000011
    
    Total Securities
    
    $
    1,262,596,655.00
    
    
    $
    1,227,020,967.02
    
    
    $
    36,135,639.50
    
    
    $
    1,190,885,327.5212
    
    Net Pool Balance
    
    $
    1,364,964,811.90
    
    
    $
    1,325,364,091.30
    
    
    
    
    
    
    $
    1,285,282,198.96
 Per $1000
    
    Principal & Interest
    
    Per $1000Coupon Rate
    
    Interest Pmt Due
    
    Face Amount
    
    Payment Due
    
    Face Amount13
    
    Class A-1 Notes
    
    
    
    
    4.3664
    %
    
    
    937,824.33
    
    
    
    3.7599556
    
    
    
    37,073,463.83
    
    
    
    148.636127414
    
    Class A-2 Notes
    
    
    
    
    4.7300
    %
    
    
    1,135,200.00
    
    
    
    3.9416667
    
    
    
    1,135,200.00
    
    
    
    3.941666715
    
    Class A-3 Notes
    
    
    
    
    4.8000
    %
    
    
    1,740,000.00
    
    
    
    4.0000000
    
    
    
    1,740,000.00
    
    
    
    4.000000016
    
    Class A-4 Notes
    
    
    
    
    4.8600
    %
    
    
    916,061.40
    
    
    
    4.0500000
    
    
    
    916,061.40
    
    
    
    4.0500000Total Securities
    
    
    
    
    
    
    
    
    4,729,085.73
    
    
    
    
    
    
    
    40,864,725.23
 C.
    
    COLLECTIONS AND AVAILABLE FUNDS17
    
    Scheduled Principal Payments Received
    
    
    
    
    
    
    26,545,042.6618
    
    Scheduled Interest Payments Received
    
    
    
    
    
    
    3,526,764.4019
    
    Prepayments of Principal Received
    
    
    
    
    
    
    341,963.1320
    
    Liquidation Proceeds
    
    
    
    
    
    
    12,968,827.4121
    
    Recoveries Received
    
    
    
    
    
    
    22
    
    Other Payments Received to Reduce
Principal
    
    
    
    
    
    
    23
    
    Subtotal: Total Collections
    
    
    
    
    
    
    43,382,597.6024
    
    Repurchased Receivables
    
    
    
    
    
    
    25
    
    Reserve Account Excess Amount
(Item 86)
    
    
    
    
    
    
    21,772.8626
    
    Total Available Funds, prior to
Servicer Advances
    
    
    
    
    
    
    43,404,370.4627
    
    Servicer Advance (Item 69)
    
    
    
    
    
    
    28
    
    Total Available Funds + Servicer
Advance
    
    
    
    
    
    
    43,404,370.4629
    
    Reserve Account Draw Amount
(Item 72)
    
    
    
    
    
    
    30
    
    Total Available Funds + Servicer
Advance and Reserve Account Draw Amount
    
    
    
    
    
    
    43,404,370.46


D.
    
    DISTRIBUTIONSDistribution Summary:31
    
    Prior Advance Reimbursement
(Item 75)
    
    
    
    
    
    
    32
    
    Servicing Fees (Item 39)
    
    
    
    
    
    
    1,022,517.4733
    
    Class A Noteholder Interest (Item 48)
    
    
    
    
    
    
    4,729,085.7334
    
    Principal Distribution Amount
(Item 73)
    
    
    
    
    
    
    36,135,639.5035
    
    Amount Paid to Reserve Account to
Reach Specified Balance
    
    
    
    
    
    
    1,517,127.7636
    
    Other Amounts Paid to Trustees
    
    
    
    
    
    
    37
    
    Certificateholders Principal
Distribution Amount
    
    
    
    
    
    
    38
    
    Remaining Funds to Seller
    
    
    
    
    
    
    






---



##### 



Volkswagen Auto Loan Enhanced Trust 2005-1MONTHLY SERVICER CERTIFICATEFor the collection period ended 12-26-2005
    
    PAGE 2
 Distribution Detail:
    
    Due
    
    
    Shortfall
    
    
    Paid39
    
    Servicing Fees
    
    
    1,022,517.47
    
    
    
    
    
    
    
    1,022,517.47Pro rata:40
    
    Class A-1 Interest
    
    
    937,824.33
    
    
    
    
    
    
    
    937,824.3341
    
    Class A-2 Interest
    
    
    1,135,200.00
    
    
    
    
    
    
    
    1,135,200.0042
    
    Class A-3 Interest
    
    
    1,740,000.00
    
    
    
    
    
    
    
    1,740,000.0043
    
    Class A-4 Interest
    
    
    916,061.40
    
    
    
    
    
    
    
    916,061.4044
    
    Class A-1 Interest Carryover Shortfall
    
    
    
    
    
    
    
    
    
    
    45
    
    Class A-2 Interest Carryover Shortfall
    
    
    
    
    
    
    
    
    
    
    46
    
    Class A-3 Interest Carryover Shortfall
    
    
    
    
    
    
    
    
    
    
    47
    
    Class A-4 Interest Carryover Shortfall
    
    
    
    
    
    
    
    
    
    
    48
    
    Class A Noteholder Interest
    
    
    4,729,085.73
    
    
    
    
    
    
    
    4,729,085.73
 E.
    
    CALCULATIONSCalculation of Principal Distribution Amount:49
    
    Beginning Note Balance - All Classes
    
    
    
    
    
    
    1,227,020,967.0250
    
    Beginning Net Pool Balance
    
    
    1,325,364,091.3051
    
    Receipts of Scheduled Principal
    
    
    (26,545,042.66
    )52
    
    Receipts of Prepaid Principal
    
    
    (341,963.13
    )53
    
    Liquidation Proceeds
    
    
    (12,968,827.41
    )54
    
    Other Collections of Principal
    
    
    55
    
    Principal Amount of Repurchases
    
    
    56
    
    Principal Amount of Defaulted Receivables
    
    
    (226,059.14
    )57
    
    Ending Net Pool Balance
    
    
    1,285,282,198.9658
    
    Yield Supplement Overcollateralization Amount
    
    
    94,396,871.4459
    
    Adjusted Pool Balance
    
    
    1,190,885,327.5260
    
    Less: Adjusted Pool Balance - End of Collection Period
    
    
    
    
    
    
    1,190,885,327.5261
    
    Calculated Principal Distribution Amount
    
    
    
    
    
    
    36,135,639.50
 Calculation of Servicer Advance:62
    
    Available Funds, prior to Servicer Advances (Item 26)
    
    
    43,404,370.4663
    
    Less: Prior Advance Reimbursement (Item 31)
    
    
    64
    
    Less: Servicing Fees Paid (Item 32)
    
    
    1,022,517.4765
    
    Less: Interest Paid to Noteholders (Item 33)
    
    
    4,729,085.7366
    
    Less: Calculated Principal Distribution (Item 61)
    
    
    36,135,639.5067
    
    Equals: Remaining Available Funds before Servicer Advance
    
    
    1,517,127.7668
    
    Monthly Loan Payments Due on Included Units but not received (N/A if Item 67 > 0)
    
    
    N/A69
    
    Servicer Advance (If Item 67 < 0, lesser of Item 67 and Item 68, else 0)
    
    
    Calculation of Reserve Account Draw Amount:70
    
    Remaining Available Funds, before Reserve Account Draw (Item 67 plus Item 69)
    
    
    1,517,127.7671
    
    Available Funds Shortfall Amount (If Item 70 < 0, Item 70,else 0)
    
    
    72
    
    Reserve Account Draw Amount (If Item 71 is > 0, Lesser of Reserve Acct Balance and Item 71)
    
    
    73
    
    Principal Distribution Amount (Item 61 - Available Funds Shortfall + Reserve Account Draw Amt)
    
    
    36,135,639.50Reconciliation of Servicer Advance:74
    
    Beginning Balance of Servicer Advance
    
    
    75
    
    Less: Prior Advance Reimbursement
    
    
    76
    
    Plus: Additional Payment Advances for Current Period
    
    
    77
    
    Ending Balance of Payment Advance
    
    
    




---



##### 



Volkswagen Auto Loan Enhanced Trust 2005-1MONTHLY SERVICER CERTIFICATEFor the collection period ended 12-26-2005
    
    PAGE 3
 
 F.
    
    RESERVE ACCOUNTReserve Account Balances:78
    
    Specified Reserve Account Balance (Lesser of (a) $9,469,474.91, and (b) the aggregate note balance)
    
    
    9,469,474.9179
    
    Initial Reserve Account Balance
    
    
    6,312,983.2880
    
    Beginning Reserve Account Balance
    
    
    7,306,397.5681
    
    Plus: Net Investment Income for the Collection Period
    
    
    21,772.8682
    
    Subtotal: Reserve Fund Available for Distribution
    
    
    7,328,170.4283
    
    Plus: Deposit of Excess Available Funds (Item 35)
    
    
    1,517,127.7684
    
    Less: Reserve Account Draw Amount (Item 72)
    
    
    85
    
    Subtotal Reserve Account Balance
    
    
    8,845,298.1886
    
    Less: Reserve Account Excess Amount to Available Funds (If Item 85 > Item 78)
    
    
    87
    
    Equals: Ending Reserve Account Balance
    
    
    8,845,298.1888
    
    Change in Reserve Account Balance from Immediately Preceding Payment Date
    
    
    1,538,900.62
 G.
    
    POOL STATISTICSCollateral Pool Balance Data:
    
    Initial
    
    
    Current89
    
    Net Pool Balance
    
    
    1,364,964,812
    
    
    
    1,285,282,19990
    
    Number of Current Contracts
    
    
    84,775
    
    
    
    82,84391
    
    Weighted Average Loan Rate
    
    
    3.42
    %
    
    
    3.41
    %92
    
    Average Remaining Term
    
    
    48.9
    
    
    
    47.793
    
    Average Original Term
    
    
    57.9
    
    
    
    58.0
 OutstandingNet Credit Loss and Repossession Activity:
    
    Units
    
    
    Principal Balance94
    
    Aggregate Outstanding Principal Balance of Charged Off Receivables
    
    
    12
    
    
    
    226,05995
    
    Liquidation Proceeds on Related Vehicles
    
    
    
    
    
    
    96
    
    Recoveries Received on Receivables Previously Charged Off
    
    
    
    
    
    
    97
    
    Net Principal Losses for Current Collection Period
    
    
    12
    
    
    
    226,05998
    
    Beginning Net Principal Losses
    
    
    4
    
    
    
    83,33699
    
    Net Principal Losses for Current Collection Period
    
    
    12
    
    
    
    226,059100
    
    Cumulative Net Principal Losses
    
    
    16
    
    
    
    309,395
 OutstandingDelinquencies Aging Profile - End of Period:
    
    Percentage
    
    
    Units
    
    
    Principal Balance101
    
    Current
    
    
    99.37
    %
    
    
    82,272
    
    
    
    1,277,141,888102
    
    31 - 60 Days Delinquent
    
    
    0.56
    %
    
    
    513
    
    
    
    7,220,185103
    
    61 - 90 Days Delinquent
    
    
    0.07
    %
    
    
    58
    
    
    
    920,126104
    
    Total
    
    
    100.00
    %
    
    
    82,843
    
    
    
    1,285,282,199