Average Car Loan Term and Monthly Payment Calculator

This car loan calculator estimates your monthly payment and total interest from the amount borrowed, APR, and term. The average new-car loan term in recent U.S. reporting has been about 68 months, while used-car loans have averaged around 67 months; enter a term that matches the offer you want to examine.

Formula

The calculator uses the standard fixed-rate installment-loan payment formula. It treats the APR as a nominal annual rate divided into monthly periods and assumes equal payments at the end of each month.

• Monthly payment: M = P × r ÷ [1 − (1 + r)⁻ⁿ]
• Total interest: I = (M × n) − P
• Monthly rate: r = APR ÷ 1,200
• Number of payments: n = term in years × 12

Here, P is the loan principal in dollars, APR is the annual percentage rate entered as a percentage, M is the monthly payment in dollars, I is total interest in dollars, and n is the number of monthly payments. The calculator displays the payment to the nearest cent; total interest is calculated using that rounded monthly payment.

Worked Example

Using the calculator’s defaults—$20,000 borrowed, an 8% APR, and a five-year term—the calculation is:

1. Convert the APR to a monthly rate: 8 ÷ 1,200 = 0.0066667.
2. Convert the term to payments: 5 × 12 = 60.
3. Substitute into the payment formula: 20,000 × 0.0066667 ÷ [1 − (1 + 0.0066667)⁻⁶⁰] = $405.53 per month, rounded to cents.
4. Calculate total interest using the rounded payment: ($405.53 × 60) − $20,000 = $4,331.80.

Assumptions

• The APR remains fixed for the full term.
• There are equal monthly payments, made at the end of each monthly period.
• Interest accrues monthly using APR divided by 12.
• The estimate excludes origination or other fees, taxes, insurance, vehicle costs, and optional products unless incorporated into the loan amount or rate.

What Is the Average Car Loan Term?

There is no single average that applies to every borrower or vehicle. Recent U.S. auto-finance reporting has put average new-vehicle loan terms at roughly 68 months and used-vehicle terms at roughly 67 months. Averages vary by data source, reporting period, and how loans are counted, so these figures are a reference point rather than a universal standard or a recommendation.

A 68-month term is five years and eight months; 67 months is five years and seven months. Many contracts use a whole number of months, such as 60, 72, or 84, so an average can fall between the exact terms commonly quoted. Check the contract’s payment schedule rather than assuming “average” means a specific available option.

How Loan Term Changes the Cost

Loan term is the scheduled time to repay the balance. With the same principal and APR, spreading repayment across more months generally lowers the required monthly payment but increases total interest, because the debt remains outstanding longer. A shorter term usually raises the monthly payment while reducing the number of months over which interest accumulates.

For example, using this calculator’s $20,000 principal and 8% APR, changing the term from five years to six years lowers the estimated monthly payment to about $350. A longer term does not make the vehicle or financing less expensive: it changes the timing of payments and can increase interest paid. Actual figures depend on the lender’s calculation, payment dates, and contract terms.

Also distinguish the loan term from the time you expect to keep the car. If you sell or trade the vehicle before the loan is repaid, the remaining balance still matters. The vehicle’s market value may be less than the amount owed; the calculator does not predict vehicle value or calculate that difference.

Choosing a Term to Compare

Rather than treating the average as a target, use the calculator to compare terms with the same amount and APR. Review both the payment and the total interest, then confirm that the entered rate, financed amount, and term match the written offer. To make a fair comparison, change one input at a time.

• Verify the amount financed: It may differ from the vehicle’s advertised price if a down payment, trade-in, taxes, fees, or optional products affect the amount. Enter the principal actually being financed.
• Use the quoted APR: APR is not the same as a monthly rate. The calculator converts an annual percentage to a monthly rate by dividing by 1,200.
• Check the number of payments: A 72-month term means 72 scheduled monthly payments, not six payments per year.
• Compare total cost as well as payment: A payment alone does not show how much interest accumulates over the entire contract.

The result is an estimate for a fixed-rate, level-payment loan. A lender’s actual schedule may differ because of fees, payment timing, rounding practices, or contract features not represented here. Get the exact figures from the lender’s disclosure.

Common Misunderstandings and Limits

“Average term” does not mean every car loan lasts that long, nor does it identify the term in any particular offer. It is a statistic across a set of loans, and its value shifts as the mix of new and used vehicles, loan sizes, and contracts changes. Averages also do not reveal the full distribution: some loans are shorter and others longer.

Another misconception is that a lower monthly payment necessarily means lower cost. It may simply reflect a longer repayment schedule. Similarly, the calculator’s total interest is not the full ownership cost of a car. It excludes fuel, maintenance, insurance, depreciation, and any charges not entered in the loan principal or APR.

This formula assumes a positive APR and regular monthly payments. It does not model variable rates, skipped or irregular payments, extra principal payments, late charges, payoff quotes, or refinancing. Use the lender’s payment schedule for contractual amounts and consult the contract for how payments and additional charges are handled.

Frequently Asked Questions

What is the average car loan term?
Recent U.S. reporting has shown averages of about 68 months for new cars and 67 months for used cars. The figure varies by source and period; it is not a required or universal term.

Is a 72-month car loan longer than average?
It is longer than the roughly 67-to-68-month averages cited above, but 72 months is a common whole-month term to compare. The payment and interest depend on the principal and APR as well as the term.

Does a longer car loan lower the monthly payment?
For the same principal and APR, a longer term generally lowers the scheduled payment by spreading repayment over more months. It can also increase total interest.

How do I calculate a car loan payment?
Use the fixed-payment formula shown above, with the loan amount, monthly rate (APR divided by 1,200), and number of monthly payments. This calculator applies that formula and rounds the payment to cents.

Does the average term include both new and used cars?
Published averages may report new-vehicle and used-vehicle loans separately. Check the source’s definition and reporting period before comparing figures.

This result is an estimate, and the lender’s disclosure gives the exact figures.

Related

• How to Make an Extra Payment on Klarna
• Finance Calculator With Extra Payments: See the Difference
• Financial Calculator With Extra Payments: Payoff Estimate

in p | Loan amount | $ | 20000 | 1 | 100000000
in apr | Interest rate (APR) | % | 8 | 0.01 | 100
in yrs | Loan term | years | 5 | 0.0833 | 50
out pmt | Monthly payment | $ | p * (apr / 1200) / (1 - (1 + apr / 1200) ^ -(yrs * 12)) | 2
out int | Total interest | $ | pmt * yrs * 12 - p | 2