Used car loans come from banks, credit unions, and dealerships, and the best choice depends on your credit score and how much time you have to shop
A used car loan is borrowed money you repay over time to buy a car that is not new. The lender — a bank, credit union, or dealership — gives you the money upfront, you buy the car, and you make monthly payments with interest until the loan is paid off. The interest rate you receive depends mainly on your credit score, the age and mileage of the car, and how much money you put down.
The "best" loan is not the same for everyone. If you have good credit and time to compare offers, a credit union or bank will usually charge less interest than a dealership. If your credit is poor or you need to buy today, a dealership may be your only option — but you will pay more. The key is knowing where to look, what to compare, and what happens if you get turned down.
Key Takeaways
- Credit unions typically offer lower interest rates than banks or dealerships, but you must be a member and have decent credit to may have access to.
- Banks let you shop for a car first, then bring a pre-approved loan offer to the dealership, which gives you negotiating power.
- Dealership financing is fastest but usually costs more in interest, especially if your credit score is below 620.
- Your interest rate depends on your credit score, the car's age and mileage, how much you put down, and the loan term you choose.
- Getting pre-approved before you shop tells you exactly what monthly payment you can afford and prevents you from overspending.
Credit unions usually offer the lowest rates if you are a member
Credit unions are member-owned financial institutions that often charge less interest than banks because they do not aim to maximize profit. If you belong to a credit union — through your employer, a professional group, or your community — you can often get a used car loan at a rate 1 to 2 percentage points lower than a bank would offer for the same credit score.
To borrow from a credit union, you must be a member first. Some credit unions let you join based on where you live or work; others require membership in a specific organization. Once you are a member, you can ask about their used car loan terms. Many credit unions will pre-approve you for a loan amount before you find a car, so you know your budget and interest rate in advance. Bring that pre-approval letter to the dealership — it works the same way a bank pre-approval does.
The catch is that credit unions typically require a credit score of at least 650 to get their best rates. If your score is lower, they may still lend to you but at a higher rate, or they may decline. Call your credit union directly to ask what credit score range they use and what rates they currently offer for used cars.
Banks let you shop around and lock in a rate before you buy
Traditional banks — both large national ones and smaller local banks — offer used car loans to people with a range of credit scores. The process is straightforward: you contact the bank, provide basic information about your income and credit, and they tell you whether they will lend to you and at what rate. If you are approved, they give you a pre-approval letter stating the loan amount and interest rate.
The advantage of a bank pre-approval is that you can shop for cars knowing exactly what you can afford and what your interest rate will be. You are not locked into the dealership's financing, which often costs more. You find the car you want, negotiate the price, and then tell the dealer you are paying with your own loan. The dealer handles the paperwork to transfer the title, but the bank is your lender.
Banks typically require a credit score of 620 or higher for standard used car loans. If your score is lower, some banks have subprime programs, but the interest rate will be significantly higher — sometimes 15% or more. Shop multiple banks to compare rates; a difference of even 1 percentage point saves you hundreds of dollars over the life of the loan.
Dealership financing is fastest but costs more in interest
When you finance through a dealership, the dealer arranges the loan with a lender (often a bank or finance company they work with regularly). You fill out paperwork at the dealership, and within hours or a day, you know whether you are approved and what your rate is. This speed is the main reason people choose dealership financing — you can drive home in the car the same day.
The downside is cost. Dealerships mark up the interest rate they receive from their lender, adding 1 to 3 percentage points to what you would pay if you borrowed directly from a bank. On a $20,000 loan over five years, a 2 percentage point difference adds up to roughly $2,000 in extra interest. Dealerships also have more flexibility to approve people with poor credit, but that approval comes with a much higher rate.
Dealership financing makes sense if you have poor credit, no time to shop around, or if the dealership is offering a special promotion (like 0% interest for a limited time). Otherwise, getting pre-approved at a bank or credit union first and bringing that offer to the dealership gives you leverage to negotiate a better deal.
What to compare when you are looking at loan offers
When you receive loan offers from different lenders, do not compare only the interest rate. Compare the full monthly payment, the total amount you will pay over the life of the loan, and any fees. A lower interest rate on a longer loan can cost you more than a higher rate on a shorter loan.
The main numbers to look at are: the interest rate (stated as an annual percentage rate, or APR), the loan term (how many months you will pay), the monthly payment, and any origination fees or prepayment penalties. Some lenders charge a fee to process the loan; others let you pay off the loan early without penalty, which saves money if you come into extra cash. Ask each lender for a written loan estimate that shows all of these details so you can compare apples to apples.
Also ask about the down payment requirement. Some lenders want 10% to 20% down; others will finance 100% of the car's price. A larger down payment lowers your monthly payment and interest rate, but it also means more money out of your pocket upfront. Decide what you can afford to put down before you start comparing offers.
How your credit score affects the interest rate you receive
Your credit score is the single biggest factor in the interest rate a lender will offer. Credit scores range from 300 to 850. Lenders use these ranges to set rates: excellent credit (750+) might get 4% to 6%, good credit (700–749) might get 6% to 8%, fair credit (650–699) might get 10% to 14%, and poor credit (below 650) might get 15% to 25% or higher.
These ranges vary by lender and change over time as interest rates in the economy rise and fall. The point is that a 100-point difference in your credit score can mean a 5 to 10 percentage point difference in your interest rate. If you are on the edge of a credit score range, it is worth spending a month or two paying down debt or correcting errors on your credit report before you explore for a loan.
You can check your credit score for free through AnnualCreditReport.com, which is the official government site for free credit reports. Many banks and credit card companies also show your score for free in their online portals. Knowing your score before you explore helps you understand what rate to expect and which lenders are likely to approve you.
What happens if you are turned down for a loan
If a lender declines your process, ask why. Common reasons include a credit score that is too low, a recent bankruptcy or foreclosure, too much existing debt, or insufficient income. Some of these you can fix quickly; others take time. If your score is the issue, paying down credit card balances or correcting errors on your credit report can help. If income is the issue, you may need a co-signer — someone with good credit who agrees to repay the loan if you do not.
If you are turned down by a bank or credit union, try a dealership or a finance company that specializes in subprime loans (loans for people with poor credit). These lenders charge much higher interest rates, but they are more likely to approve you. Before you accept a subprime offer, make sure the monthly payment fits your budget — subprime loans often have payments that are difficult to sustain, which leads to missed payments and repossession.
Another option is to wait and rebuild your credit before you buy. This is not always possible, but if you can delay a few months, paying down debt and making on-time payments will raise your score and lower the interest rate you receive.
Frequently Asked Questions
Should I get pre-approved before I look for a car?
Yes. Pre-approval tells you exactly how much you can borrow and what your interest rate will be. It also gives you negotiating power at the dealership because you are not dependent on their financing. Pre-approval takes 15 to 30 minutes and does not commit you to anything.
What is the difference between pre-approval and pre-qualification?
Pre-qualification is a rough estimate based on information you provide; the lender does not verify your income or credit. Pre-approval is a firm offer after the lender has checked your credit report and verified your income. Pre-approval is stronger and more useful when you are shopping for a car.
Can I refinance a used car loan after I buy the car?
Yes. If your credit score improves or interest rates drop, you can refinance the loan with a different lender at a lower rate. This works best if you still owe a significant amount on the loan and have at least a year of on-time payments behind you. Refinancing takes a few weeks and involves paperwork, but it can save you money.
What is gap insurance and do I need it?
Gap insurance covers the difference between what you owe on the loan and what the car is worth if it is totaled in an accident. It is most useful on used cars because they lose value quickly. Some lenders require it; others offer it as an option. Ask whether it is included in your loan offer and what it costs.
How long should I finance a used car for?
Shorter loans cost less in total interest but have higher monthly payments. Longer loans have lower payments but cost more overall. A typical used car loan is 48 to 72 months. Choose a term that fits your budget while keeping the total interest cost in mind. A 60-month loan at 8% costs significantly more than a 48-month loan at the same rate.