72- and 84-Month Car Loans: What the Lower Payment Costs

An 84-month car loan is seven years of payments. If you buy a new car on one, the loan may outlast the factory warranty, a set or two of tires, and possibly your interest in the car. That isn’t a reason to rule long loans out. It is a reason to know exactly what the extra months buy you, and what they cost.

Payment vs. total interest across terms

Stretching a loan spreads the same principal over more payments, so each payment is smaller. But you’re borrowing the money for longer, so more interest builds up. The chart below uses a $32,000 loan at a hypothetical 8% rate, held constant across terms.

• 36 months$1,002.76/mo · $4,099 interest
• 48 months$781.21/mo · $5,498 interest
• 60 months$648.84/mo · $6,931 interest
• 72 months$561.06/mo · $8,397 interest
• 84 months$498.76/mo · $9,896 interest

• Amount borrowed ($32,000)
• Interest

Payment and interest by term

Term	Monthly payment	Total interest	Total repaid
36 months	$1,002.76	$4,099	$36,099
48 months	$781.21	$5,498	$37,498
60 months	$648.84	$6,931	$38,931
72 months	$561.06	$8,397	$40,397
84 months	$498.76	$9,896	$41,896

Moving from 60 to 84 months lowers the payment by $150.08 and raises total interest by about $2,965. Put another way, you get roughly $150 of monthly breathing room for five years, then pay $498.76 a month for two more years after the 60-month loan would have been finished.

The table also flatters long loans in one way: it uses the same rate for every term. In practice, many lenders price longer terms at higher rates, which widens the gap further. Ask for quotes at more than one term and compare them directly. Our guide to loan term and total cost covers the same trade-off for other kinds of loans.

Depreciation, your balance, and negative equity

A car is collateral for the loan, and its value generally falls over time. Your loan balance also falls as you pay. Whether you have equity, meaning the car is worth more than you owe, depends on which falls faster.

Long terms work against you here because of how amortization works. Early payments are weighted toward interest, and on a longer loan each payment is smaller to begin with, so less principal gets paid down in the first few years. The car loses value at the same pace no matter how you financed it. The balance does not.

We’re not putting a number on how fast your car will lose value; that depends on the make, model, mileage, condition and market, and it changes over time. Pricing guides and dealer appraisals can tell you where your car stands today. What the loan math shows is that a long term lowers the bar the car has to fall below before you owe more than it’s worth.

Owing more than the car is worth, called negative equity, isn’t a problem as long as you keep the car and keep paying. It becomes one when something forces a change: the car is totaled or stolen and insurance pays only its market value, you need to sell because your circumstances changed, or you want to trade it in.

Rolling negative equity into the next loan

When you trade in a car you owe more on than it’s worth, the dealer still has to pay off your old loan. The shortfall typically gets added to your new loan. It’s easy to miss because it shows up as one line in the itemization of the amount financed, not as a separate bill.

The CFPB studied this using data from nine auto lenders on loans made from 2018 through 2022. In that data, 11.6% of vehicle loans included negative equity from a previous loan. The average amount rolled in was $5,073 for new-vehicle loans and $3,284 for used. Borrowers who financed negative equity had longer average terms (73 months, versus 67 for those with no trade-in), and were more than twice as likely to have their account assigned to repossession within two years as borrowers whose trade-in had positive equity.

Starting a long loan already underwater makes it more likely you’ll still be underwater at the next trade-in, which is how the cycle repeats. If you’re in this position, the cheapest options are usually to keep the current car longer and pay it down, or to put cash toward the shortfall rather than financing it.

When a long term might still make sense

There are reasonable cases for a 72- or 84-month loan:

• You need a reliable car to get to work, and the payment on a shorter term doesn’t fit your budget even for a cheaper car.
• A manufacturer’s promotional rate is offered only at a longer term and is low enough that total interest stays modest.
• You want the lower required payment for flexibility, and you plan to keep the car for a long time and pay extra when you can.

Before choosing one, it’s worth checking whether a less expensive car, a larger down payment, or a used car on a shorter term would get you to a similar payment with less total interest. The affordability explorer shows what a given payment buys at different terms.

How to protect yourself on a long loan

• Put more down if you can. A larger down payment means you start with equity, which buys a cushion against depreciation.
• Get rate quotes at several terms. If the 84-month rate is noticeably higher than the 60-month rate, the cost gap grows.
• Confirm there’s no prepayment penalty and that the loan uses simple interest, so extra payments reduce principal and shorten the loan.
• Pay extra when you can. Even modest additional principal early in the loan helps you build equity sooner.
• Consider GAP coverage while you’re underwater, and shop its price rather than accepting the first quote. It can cover some or all of the difference between an insurance payout and your loan balance if the car is totaled or stolen.
• Plan to keep the car at least until the balance drops below its value. Check where you stand once a year.
• Revisit the rate later. If your credit improves, refinancing to a lower rate without stretching the term further can cut the remaining interest.

Common questions

At the dealership or the bank, ask for the total of payments at each term you’re offered, not just the monthly payment. The loan payment calculator will show it in seconds, along with the balance at any point in the loan.