Initial Transaction (journal entry):

Fixed Assets -> Automobile Finance:  debit  $23,178.94

Long Term Liability -> Automobile Loan: credit  $23,178.94 (principal only)

1st Payment:

Write check - Under expense tab enter as follows:

Long Term Liability -> Automobile Loan:  monthly principal amount

Expense -> Loan Interest:  monthly interest amount

This reduces the Automobile Loan amount and increases Loan interest on a monthly basis.

Monthly Depreciation (journal entry):

Depreciation -> Auto Accumulated Depreciation:  credit

Expense -> Depreciation:  debit

This is how I do it.