A longer loan term (e.g. 72 or 84 months) lowers your monthly payment but dramatically increases total interest paid and keeps you in negative equity for longer. A shorter term (36–48 months) costs more per month but is significantly cheaper overall. The financially optimal range for most buyers is 48 months for new cars and 36–48 months for used. The average new car loan term in the US hit a record 68–69 months in 2024–2025 — a sign that buyers are routinely overextending. If you can only afford a car with a 72+ month loan, the car is likely outside your budget.
How loan term affects cost: $25,000 loan at 7% APR
| Term | Monthly payment | Total interest paid | Total cost | Negative equity risk |
|---|---|---|---|---|
| 36 months | ~$772 | ~$2,778 | ~$27,778 | Low — repays fast |
| 48 months | ~$597 | ~$3,671 | ~$28,671 | Low-moderate |
| 60 months | ~$495 | ~$4,713 | ~$29,713 | Moderate — 1–2 yrs underwater |
| 72 months | ~$426 | ~$5,705 | ~$30,705 | High — often 3+ yrs underwater |
| 84 months | ~$376 | ~$6,602 | ~$31,602 | Very high — underwater most of term |
Why longer terms have become the norm
As new car prices have risen — the US average crossed $48,000 by mid-2026 — buyers have stretched loan terms to keep monthly payments manageable. The average new-car loan term reached 68–69 months (nearly six years) in 2024–2025, and 72- and 84-month loans are now common. The monthly payment on an $48,000 car at 7% APR over 84 months is around $720 — which sounds affordable. The total interest paid is over $12,500. The same loan over 48 months costs about $1,148/month but only $7,100 in interest.
The negative equity problem
Negative equity — owing more on your loan than the car is worth — is the most serious practical risk of a long loan term. New cars depreciate rapidly: typically 15–25% in year one and 40–60% over five years. A 72-month loan repays principal so slowly that the loan balance stays above the car's value for three or more years. During that time, if you need to sell, insure a write-off, or trade in, you will owe more than you receive — a gap you must pay out of pocket or roll into your next loan (making the problem compound).
How to find the right term for your budget
Start with the 10% rule, not the payment
First calculate your total monthly transport budget (10% of gross income is the standard ceiling). Then subtract insurance, fuel and maintenance. The remainder is your maximum monthly loan payment. Use a loan calculator to find the vehicle price that fits that payment at a 48-month term. If the car you want requires a 72-month term to fit your budget, it is outside your price range — not a reason to extend the term.
The break-even test
Calculate how long it will take for the loan balance to fall below the car's value. A quick method: find the depreciation curve for your model online (many car valuation sites publish this), then track when your loan balance crosses below it. For a typical new car with a 48-month loan and 20% down payment, break-even is around 12–18 months. For a 72-month loan with 10% down, it can be 3–4 years.
Used cars and shorter terms
Used cars are sometimes offered with terms as long as 72 months, but the risk is particularly high. A five-year-old car financed for six years will be eleven years old when paid off — often past its reliable service life — and you will have paid thousands more in interest than necessary. Most advisers recommend no more than 48 months on a used car, and 36 months on any vehicle over five years old.
A dealer might show you two loans at the same monthly payment: one for 48 months and one for 72 months. The 72-month option is on a more expensive car or includes add-ons. The payment feels identical — the total cost is thousands higher. Always ask to see the total amount payable over the full term, not just the monthly figure.
When a longer term can make sense
A longer term is defensible if:
- You are offered a genuine 0% or sub-2% promotional APR — in that case, the interest cost of a longer term is minimal and keeping cash liquid has real value.
- You are buying a car with unusually low depreciation and can be confident the loan balance will stay near the car's value.
- The alternative is no car at all and public transport is genuinely not viable — though in that case you should also look at cheaper vehicles.
Frequently asked questions
What is the best loan term for a car?
Is a 72-month car loan bad?
Does a shorter loan term always mean a better deal?
What is the average car loan term in 2026?
Can I pay off my car loan early?
Sources & further reading
- Bankrate — Auto Loan Rates and Terms 2026
- NerdWallet — Average Car Loan Interest Rates by Credit Score
- Consumer Financial Protection Bureau — Auto Loans
Figures, prices and policy details were current at the last-updated date above. Automotive pricing, incentives and regulations change frequently — verify time-sensitive details with the linked primary sources. Read our editorial policy and fact-checking standards.
