A growing number of Americans are stretching their auto loans beyond six years to make monthly payments feel more manageable. But according to a new study from LendingTree, that decision is coming with a steep long-term price tag.
Borrowers with loans longer than six years are paying an estimated $5,974 more in interest on average compared to those with shorter loans. The report found that 34.9% of borrowers currently have auto loans lasting more than 72 months.
In some states, the numbers are even higher, including New Mexico, Alaska, and West Virginia. The trend reflects the growing strain of vehicle affordability in the United States.
Average used car prices are hovering near $26,000, while many new vehicles now cost far more. To soften the monthly burden, buyers are spreading payments over longer periods. The problem is that interest keeps accumulating the entire time.
Why Longer Loans Become So Expensive
The math behind auto loan interest is fairly simple, but the impact becomes enormous over time. When someone finances a car, the lender charges interest on the remaining balance each month. A longer repayment period means the borrower spends more months paying interest before the loan is cleared.
Imagine two buyers financing the same $35,000 vehicle at similar interest rates. A five-year loan may carry a monthly payment of around $675. An eight-year loan could lower that payment closer to $500. At first glance, the longer loan appears easier to handle financially.
But the lower payment comes with a hidden tradeoff. The borrower remains in debt for an extra three years, allowing interest charges to pile up month after month. By the end of the loan, the total amount paid can be thousands higher.
LendingTree estimates borrowers with loans longer than six years pay roughly $13,272 in total interest, compared with $7,298 for shorter-term borrowers. That is nearly 82% more interest.
Bigger Loans, Bigger Interest Bills
The study also found borrowers with longer loan terms are financing significantly larger amounts. Consumers with loans longer than six years financed an average of $38,691, compared with about $29,941 for borrowers with shorter terms.
Their monthly payments were also higher, averaging $652 versus $581. That combination creates a financial squeeze many buyers do not fully notice until years later.
A larger loan balance means more interest accrues from day one. Extending the repayment period multiplies the effect. In many cases, borrowers end up paying heavily for a vehicle that is rapidly losing value.
Vehicles depreciate much faster than homes or other assets. By the third or fourth year, many cars are worth far less than the remaining loan balance. This is known as being “underwater” on a loan. Financial analysts warn this can become risky if the car is totaled, stolen, or traded in early.
The Affordability Trap Facing Many Drivers
The rise of long-term auto loans says as much about the economy as it does about borrowing habits. Higher vehicle prices, elevated interest rates, and inflation have forced many households to focus on monthly affordability rather than total borrowing costs.
An eight-year loan may reduce the immediate pressure on a family budget, even if it increases the final cost dramatically. Some lenders are now even offering loans approaching 100 months, or more than eight years.
Consumer finance experts say buyers should pay close attention not only to the monthly payment, but also to the total interest amount listed in financing agreements. Paying slightly more each month on a shorter loan term can save thousands of dollars overall.
A larger down payment, choosing a less expensive vehicle, or refinancing later at a lower rate can also reduce the long-term cost burden. For many Americans, the challenge is no longer simply buying a car. It is avoiding years of expensive debt attached to one.