What's the Right Car Loan Term? 36, 48, 60, 72, or 84 Months?

The average new-car loan in 2026 stretches 69 months. The average used-car loan, 67. Both are longer than they should be. The case for a shorter term is overwhelming once you see what each extra year actually costs.

Monthly payment vs. total interest

$30,000 loan at 7.5% APR, by term:

• 36 months: $933/mo, $3,580 total interest
• 48 months: $725/mo, $4,800 total interest
• 60 months: $602/mo, $6,100 total interest
• 72 months: $521/mo, $7,500 total interest
• 84 months: $464/mo, $8,975 total interest

Stretching from 48 to 84 months drops the payment 36% but increases total interest 87%. That's $4,175 of extra cost for a smaller payment that often signals you bought too much car.

The underwater problem on long terms

On a 72- or 84-month loan, depreciation outpaces principal reduction for the first 36–48 months. You spend years owing more than the car is worth. Any accident, job change, or life event that requires selling becomes a financial trap.

Recommended term by scenario

• New car, 20%+ down: 48 months ideal, 60 months acceptable
• Used car, 15%+ down: 48 months ideal, 60 months acceptable
• Used car, less down: 60 months (shorter if payment fits 10% of take-home)
• Any scenario at 72+ months: STOP. Buy a cheaper car instead

When 36 months wins

If you can comfortably afford the 36-month payment AND the rest of your finances are in shape (3-month emergency fund, 15%+ retirement contributions, no high-interest debt), 36 months saves the most interest and gets you to a paid-off car fastest. A paid-off car is the cheapest transportation in existence.

The 'long term, prepay aggressively' move

Some buyers take a 60-month loan for the safety net of a low required payment, then voluntarily pay extra each month. This works ONLY if your loan has no prepayment penalty (most don't, but verify) and you have the discipline to actually do it. Most don't.