An auto loan lets you finance a vehicle purchase, paying it off in fixed monthly installments while the lender holds a lien on the car until it's paid in full. The rate you're offered depends on more than just your credit score — the vehicle's age, the loan term, and even where you finance all move the number.
What determines your auto loan rate
- Credit score — the single biggest factor, with the best rates generally reserved for scores above 720.
- New vs. used — new car loans typically carry lower rates than used car loans, partly because used vehicles are seen as higher risk collateral.
- Loan term — shorter terms often come with slightly lower rates, though the bigger cost driver is usually total interest paid over time.
- Down payment — a larger down payment reduces the lender's risk and can improve your offered rate.
- Where you finance — dealership financing, banks, credit unions, and online lenders can quote meaningfully different rates for the same borrower.
New car loans vs. used car loans
| New car loans | Used car loans | |
|---|---|---|
| Typical rates | Lower | Higher |
| Typical terms | Up to 72–84 months | Usually shorter, 36–60 months |
| Depreciation risk | Faster depreciation right after purchase | Already past the steepest depreciation |
Why a longer term isn't automatically better
Longer terms mean more total interest
Use a loan payment calculator to compare the total interest cost across different terms for the same loan amount and rate before deciding. A slightly higher monthly payment on a shorter term often saves hundreds or thousands of dollars overall.
Get pre-approved before you shop
Getting pre-approved for an auto loan from a bank or credit union before visiting a dealership gives you a real interest rate to compare against — and negotiating leverage, since you're no longer dependent on the dealership's financing offer. If the dealer can beat your pre-approved rate, great; if not, you already have a solid option.
Watch for add-ons that inflate the loan
- Extended warranties and service contracts, which can often be purchased separately for less.
- GAP insurance, useful if you have a small down payment, but sometimes marked up significantly at the dealership.
- Add-on packages (fabric protection, etching, etc.) that add cost without adding much real value.
