How Do Car Loans Work?
A car loan lets you borrow money to purchase a vehicle and repay it in fixed monthly installments, typically over 24 to 84 months, with interest. The lender holds the vehicle title as collateral until the loan is paid in full.
The key components of any car loan:
Loan amount (principal) — The amount you borrow after your down payment and any trade-in credit are applied.
Interest rate vs. APR — The interest rate is the cost of borrowing money expressed as a percentage. The APR (Annual Percentage Rate) includes the interest rate plus any lender fees, giving you the true total cost. Always compare APRs — not just interest rates — across lenders.
Loan term — The repayment period. Shorter terms (36–48 months) mean higher monthly payments but less interest paid overall. Longer terms (72–84 months) lower your monthly payment but significantly increase total interest cost.
Down payment — Reduces the loan amount and your interest costs.
Monthly payment — Covers both principal repayment and interest, calculated at a fixed amount for the life of the loan.
Current rate benchmarks (Q3–Q4 2025, per Experian):
Average new car loan APR: ~6.56%
Average used car loan APR: ~11.40%
Super-prime borrowers (781+ score) may qualify for rates as low as 4.88% on new cars.
New for 2025–2028: Auto Loan Interest Tax Deduction Under the One Big Beautiful Bill Act (signed July 4, 2025), buyers who finance a new, U.S.-assembled vehicle for personal use can deduct up to $10,000 per year in loan interest on their federal tax return — without needing to itemize. This deduction applies to loans originated after December 31, 2024, through the 2028 tax year. The deduction phases out for individuals earning over $100,000 ($200,000 for joint filers). Used vehicles and leases do not qualify.
Who offers car loans? Banks, credit unions, and online lenders all provide auto financing. Dealerships can also arrange financing, but they often mark up the rate above what lenders offer directly — a practice called "dealer reserve." Getting pre-approved from a credit union or bank before you shop gives you a benchmark the dealership must beat.
