Should you refinance your car loan? When it saves money.
Refinancing can cut what you pay, but only if the new rate is meaningfully lower and you don't stretch the loan to get a smaller payment. A worked example shows a $2,565 saving, and how a longer term can shrink that to under $1,000.
By the LotGauge team
What refinancing actually changes
Refinancing replaces your current car loan with a new one, usually from a different lender. The new lender pays off the old loan and you make payments to the new one.
The real savings come from a lower APR. A longer term also lowers the payment, but it can raise the total you pay. So compare two numbers, not one: the new monthly payment, and the total you'll pay until the car is paid off.
Worked example: credit improved after 18 months
Say you financed $25,000 for 72 months at 13.93% APR, Experian's Q2 2026 average used-car rate for credit scores of 601–660. The payment is $514.21 a month. After 18 payments you still owe about $20,544, and keeping the loan means 54 more payments totaling about $27,767.
Your score has since moved into the 661–780 range, where the average used-car rate is 8.81%. Refinancing the $20,544 at 8.81% for the same remaining 54 months, with $200 of fees added to the loan, gives a payment of $466.71 and about $25,203 in total payments. That saves roughly $2,565, and you finish on the same date. See this refinance in the calculator.
If you instead stretched the new loan to 72 months, the payment would drop to $371.98, but you'd pay about $26,782 in total. That's only about $985 less than keeping the old loan, and you'd be paying for 18 extra months. Compare the 72-month version.
With a score in the top tier (781–850, average 6.29%), the same 54-month refinance would be about $442 a month and save roughly $3,895.
When refinancing is worth checking
Your credit has improved since you bought the car, especially if you've moved up a tier. Rates have fallen since you took the loan. You took dealer-arranged financing without comparing offers, since dealer rates can include a markup. You owe less than the car is worth, which lenders see as lower risk.
Most lenders want to see about six months of on-time payments before they'll refinance.
When to skip it
The loan is nearly paid off or the balance is small. Many lenders have minimum balances, often somewhere between $3,000 and $7,500, and the interest you'd save is small anyway. You owe more than the car is worth, which makes approval harder. The car is older (often around 10 years) or has high mileage (often over 100,000 to 150,000 miles), which many lenders won't refinance. Or fees and any prepayment penalty would eat most of the savings.
Also skip it if the only appeal is a lower payment from a much longer term. That usually means paying more in total and owing more than the car is worth for longer.
Costs to count before you switch
Add up every cost and compare it with the interest you'd save: lender origination or processing fees, your state's fee for transferring the title and lien to the new lender, and any prepayment penalty on the old loan (check your contract; many auto loans don't have one).
If you bought GAP or a service contract with the original loan, paying that loan off early may entitle you to a prorated refund on those products. Ask for it. GAP is tied to the old loan, so if you still want GAP coverage, arrange it for the new loan, ideally through your car insurer. Our dealer add-ons guide explains these refunds.
How to shop for a refinance
Get your current payoff amount from your lender. Then get prequalified offers from at least three lenders, such as a credit union, a bank and an online lender. Prequalification usually uses a soft credit check. When you formally apply, try to do it within a short window, since credit scoring models usually count several auto-loan inquiries close together as one.
Compare offers by APR, term and total cost, not by payment alone. Choosing the same or a shorter term than you have left keeps the savings real.
Run your own numbers
In the car payment calculator, put your payoff amount in the vehicle price, set cash down, trade-in and sales tax to $0, put any refinance fees in dealer fees, and enter the new APR and term. Then compare the result with the payments left on your current loan. The term comparison table shows how the total changes at each loan length.
Related: how APR and loan term change your payment and what extra payments save.
Sources
Experian, average used-car loan rates by credit score (Q2 2026). Bankrate, when to refinance a car loan (Sept 2026). Consumer Financial Protection Bureau, add-on product refunds when loans end early (2022). Payment figures were calculated with LotGauge's calculator and are examples, not offers; your rate depends on your credit, the car and the lender.