Key takeaways
- Refinancing saves money when the new rate is meaningfully lower than your current one and you keep the same payoff date or a shorter one.
- On a $24,163 balance with 42 months left, dropping from 11% to 7% saves about $1,608 after $300 in fees.
- A lower payment from a longer term isn’t the same as saving money. Always compare the total left to pay.
- Watch for fees, prepayment penalties, and add-ons rolled into the new loan.
Refinancing a car loan means taking a new loan, usually from a bank or credit union, to pay off the one you have. It’s a simple way to save money if your situation has improved since you bought the car. It’s also an easy way to pay more without noticing, if the main thing that changes is the length of the loan.
When refinancing tends to make sense
- Your credit score has improved. Borrowers who financed with fair or poor credit often qualify for much lower rates a year or two later.
- Market rates have dropped since you took out the loan.
- You financed at the dealership without comparing offers. Dealer-arranged rates can include a markup over what the lender would offer you directly.
- You have a lot of the loan left. Most of the interest on an amortizing loan is paid early, so refinancing late in the loan saves less.
Worked example
Say you bought a car with a $32,000 loan at 11% for 60 months. Your payment is $695.76. After 18 payments you owe $24,163, with 42 months left. Your credit has improved and a credit union offers 7%. Assume $300 in refinancing and title fees.
| Keep current loan | Refinance: 7%, 42 months | Refinance: 7%, 60 months | |
|---|---|---|---|
| Monthly payment | $695.76 | $650.34 | $478.46 |
| Months left | 42 | 42 | 60 |
| Interest from here | $5,058 | $3,151 | $4,544 |
| Fees | $0 | $300 | $300 |
| Total left to pay | $29,222 | $27,614 | $29,008 |
Keeping the same payoff date saves about $1,608, and the monthly savings cover the fees in about 7 months.
Stretching to 60 months drops the payment by $217 a month, which feels like a bigger win. But you’d make 18 extra payments, and the total savings shrink to $214. With a smaller rate cut, a longer term can easily cost more than keeping the loan you have. You’d also owe more for longer on a car that keeps losing value.
Costs and catches to check
- Prepayment penalty on your current loan. Many auto loans have none, but check your contract.
- Fees on the new loan: origination or application fees, plus state title and registration fees to change the lienholder.
- Add-ons. Some lenders offer to roll GAP insurance, extended warranties, or service contracts into the new loan. They raise your balance and your interest. If you already have GAP coverage through your original loan, check whether it cancels (and whether you’re owed a refund) when that loan is paid off.
- Loan-to-value limits. If you owe more than the car is worth, some lenders won’t refinance, or will charge more.
- Vehicle age and mileage limits. Many lenders won’t refinance older, high-mileage vehicles.
How to shop for a refinance
- Get your payoff amount from your current lender. It’s slightly different from your statement balance because of daily interest.
- Check your credit so you know roughly what rate tier to expect.
- Get quotes from several lenders (credit unions are often competitive) within a short window, so the credit inquiries are typically treated as one.
- Compare the total left to pay, including fees, for each offer against keeping your current loan. Match the remaining term first, then decide whether a longer term is worth the extra cost.
- Keep making payments on your current loan until the new lender confirms the payoff.
The loan calculator compares payments and total interest for any balance, rate, and term. For a new purchase, the auto loan calculator includes trade-ins, taxes, and fees. See also how loan term length changes your total interest.