New vs. Used Car Loans: The Real Cost Difference

The average new-car loan payment crossed $740 a month in early 2026, while the average used-car payment sat closer to $520. That $220 gap looks like an easy argument for buying used, but the loan itself tells a more complicated story once you look past the monthly payment.

The Sticker Price Isn't the Real Gap

A new car costs more to finance mainly because it costs more to buy, but the size of the loan is only one part of the total cost. Depreciation, interest rate, and loan term all interact differently depending on whether the car is new or used, and a smaller loan on a used car doesn't automatically mean a smaller total cost of ownership.

Interest Rates: Why Used Loans Cost More Per Dollar Borrowed

Lenders generally charge higher rates on used-car loans than new-car loans, even for the same borrower with the same credit score. In 2026, well-qualified buyers might see new-car rates in the 6% to 8% range, while a used-car loan for the same borrower often lands 1.5 to 3 percentage points higher. Lenders justify this because used cars carry more uncertainty: unknown maintenance history, higher likelihood of mechanical issues, and a vehicle that's already lost its steepest depreciation but could still lose value unpredictably. Older or higher-mileage vehicles push rates even higher, and some lenders cap how old a car they'll finance at all, often around 8 to 10 years or a set mileage limit.

Loan Term Length and the Depreciation Trap

Both new and used loans have stretched toward 72- and 84-month terms to keep payments manageable, but the math works against buyers differently depending on the vehicle. A new car depreciates fastest in its first two to three years, so a long loan term on a new car increases the odds you'll be underwater, owing more than the car is worth, for a big chunk of the loan. A used car has already absorbed that early depreciation hit, so a long loan term is somewhat less risky on that front, but it still means paying interest for six or seven years on a vehicle that may need major repairs well before the loan is paid off.

Which Actually Costs Less Over Time

Run the comparison on total cost, not monthly payment, and the picture usually looks like this:

• New car, $35,000 loan, 7% APR, 60 months: roughly $693 a month, about $6,590 in total interest.
• Used car, $22,000 loan, 9.5% APR, 60 months: roughly $462 a month, about $5,720 in total interest.
• Same used car stretched to 72 months at the same rate: payment drops to about $402 a month, but total interest rises to roughly $6,930, more interest than the new-car example above on a much smaller loan.

That last line is the real lesson: term length can erase the used-car interest-rate advantage entirely. A shorter loan on a used car, even at a higher rate, frequently beats a longer loan at a lower rate once you add up total interest paid.

Financing cost isn't the only variable that shifts between new and used. New cars typically come with full manufacturer warranties that cover repairs for three to five years, reducing the odds of a surprise expense stacking on top of a loan payment. Used cars, especially those bought once the original warranty has expired, carry a real risk of repair costs landing in the same year as a car payment. Insurance premiums usually run higher on new vehicles too, since replacement cost is higher, which is worth folding into any monthly-budget comparison rather than treating the loan payment as the full picture of what a car costs you each month.

Before comparing new and used financing side by side, get preapproved for both from your bank or credit union so you're negotiating from real numbers rather than dealership financing offers, which can be marked up over the rate the lender actually approved.

Where Certified Pre-Owned Loans Fit In

Certified pre-owned (CPO) vehicles sit in the middle of this comparison, and their loans often do too. Because CPO cars come with an extended manufacturer warranty and pass a multi-point inspection, some lenders and even the automaker's own captive finance arm treat them almost like new-car loans for pricing purposes, sometimes within a point of new-car rates rather than the wider used-car spread. That can make a CPO loan a reasonable middle path if you want lower depreciation risk than a brand-new car but don't want the rate penalty and repair uncertainty of a standard used purchase. The trade-off is price: CPO vehicles typically cost more than an equivalent used car without the certification, so the lower rate doesn't always translate into a lower total cost once you compare it against a slightly older, non-certified version of the same model.