Compare a car loan without losing sight of the car’s total cost

Keep the purchase and financing figures separate

Write down the out-the-door price, down payment, trade-in allowance, existing trade-in payoff and amount financed. Check that optional products have not been added to principal without being considered as separate purchases.

For financing, compare the APR, contractual interest rate, number of payments and total amount financed. Record the offer date and any conditions. A payment alone cannot tell you whether two offers fund the same purchase on the same terms.

Stress the whole ownership budget

Build a monthly allowance for insurance, fuel or charging, registration and repairs alongside the payment. The numbers should reflect the vehicle and your use, not a generic percentage of income.

A long term also means a longer period with debt outstanding. If you expect to replace the vehicle earlier, inspect the modeled balance and do not assume resale value will cover it. A payment calculator does not forecast depreciation or guarantee a trade-in amount.

• Try a higher ownership-cost allowance before choosing the loan term.
• Compare a smaller purchase amount as well as a longer term.
• Use written quotes and keep the purchase figures consistent.

Sources and method

• CFPB: What to negotiate on a vehicle or auto loan
• CFPB: Prepare before shopping for an auto loan

Worked examples use the stated hypothetical assumptions. Source links support the general definitions and rules; they do not verify a specific product, offer or individual outcome.