What makes a used car loan work for you depends on your credit, how much you can put down, and what you can afford monthly

There is no single "best" used car loan because the right one depends on your credit score, down payment, and how long you want to pay. A loan that works for someone with a 750 credit score and $8,000 down will not work for someone with a 580 score and $1,500 down. The loan that matters most is the one you can actually afford and that does not trap you in a cycle of rolling over debt.

The core choice is between a bank, a credit union, and a dealership lender. Banks typically offer the lowest rates if your credit is good, credit unions often beat banks for borrowers with fair credit, and dealership financing is fastest but usually costs more. Your rate will also depend on the age and mileage of the car — lenders charge more for older vehicles because they are riskier collateral.

Before you walk into a dealership or call a lender, get pre-approved. Pre-approval tells you what rate you actually may have access to for, what your monthly payment will be, and how much you can borrow. It also gives you negotiating power because the dealer knows you have cash and can walk away.

Key Takeaways

  • Pre-approval from a bank or credit union shows you your real rate and monthly cost before you shop, and gives you leverage at the dealership.
  • Credit unions often offer lower rates than banks for borrowers with fair or poor credit, and membership is usually open to anyone in your area or profession.
  • Dealership financing is convenient but typically costs 1 to 3 percentage points more than bank or credit union rates, so compare before you sign.
  • The age and mileage of the car affect your rate — a 2019 with 60,000 miles will cost less to borrow for than a 2015 with 120,000 miles.
  • A larger down payment lowers your monthly payment and your interest cost, but do not drain your emergency fund to make it happen.

Banks offer the lowest rates, but only if your credit score is strong

Banks like Wells Fargo, Chase, and Bank of America have the lowest advertised rates, typically 4 to 8 percent for used cars depending on the term and your credit. Those rates are real, but they go to borrowers with credit scores above 700. If your score is below 650, a bank will either decline you or offer a rate so high that a credit union becomes cheaper.

To get a bank pre-approval, you will need your Social Security number, proof of income (a recent pay stub or tax return), and the vehicle identification number (VIN) of the car you want to buy. The bank will pull your credit report and give you a rate within a day or two. Most banks let you lock in a rate for 30 to 60 days, which means the offer stays good even if rates move.

The downside of bank financing is that it is slower than dealership financing and requires you to have found the car already. You cannot get pre-approved for a vague amount and then shop — the bank wants to know what you are buying. Also, if your credit is not strong, you will waste time explore only to be declined or offered a rate that makes the loan unaffordable.

Credit unions often beat banks for borrowers with fair or poor credit

Credit unions are member-owned lenders that typically charge 1 to 3 percentage points less than banks for used car loans, especially for borrowers with credit scores between 600 and 700. Rates vary by credit union, but many offer 6 to 10 percent for fair credit and 8 to 12 percent for poor credit. Some credit unions also offer rate discounts if you set up automatic payments or if you are a long-time member.

You do not have to work at a specific company or live in a specific place to join most credit unions. Many are open to anyone in a geographic area, and some are open to members of a profession or industry. Start by searching your state's credit union league or visiting CO-OP, which is a network that lets you find credit unions near you. Membership is usually free or costs $5 to $25 one time.

Credit unions also tend to be more flexible about income documentation. If you are self-employed or have irregular income, a credit union is more likely to work with you than a bank. The trade-off is that credit unions are slower — approval can take three to five business days instead of one or two — and some have lower lending limits, so they may not finance a car over $25,000 or $30,000.

Dealership financing is fast but costs more, and you should compare before signing

Dealerships offer financing through captive lenders (owned by the car manufacturer) or through third-party lenders they partner with. The advantage is speed — you can walk out with a car the same day. The disadvantage is cost. Dealership rates are typically 1 to 3 percentage points higher than what you would get from a bank or credit union, and sometimes higher if your credit is poor.

Dealerships also make money by marking up the rate. If the lender approves you at 7 percent, the dealer might offer you 8.5 percent and keep the difference. This is legal, but it is why you should always have a pre-approval rate in hand before you negotiate. If the dealer offers you 9 percent and you know a credit union will do 7 percent, you can push back or walk away.

Dealership financing is worth considering only if the dealer offers a special rate (sometimes 0 to 2 percent for well-may have access to buyers) or if you cannot get approved anywhere else. Even then, ask the dealer to disclose the lender's actual rate so you can see how much markup they are adding. Some dealers will not tell you, which is a sign to shop elsewhere.

Down payment size affects your rate and monthly payment

A larger down payment lowers both your monthly payment and the interest rate you are offered. Putting down 20 percent instead of 10 percent typically saves you 0.5 to 1 percentage point on your rate, depending on the lender and your credit. On a $15,000 car, that is the difference between $3,000 down and $1,500 down — and a monthly payment that is $50 to $100 lower.

However, do not empty your savings to make a large down payment. You need an emergency fund for car repairs, medical bills, or job loss. A good rule is to put down what you can afford without dropping below three months of expenses in savings. If you have $5,000 saved and your monthly expenses are $2,000, put down $1,000 and keep $4,000 in reserve.

Some lenders also have minimum down payments — typically 10 to 15 percent — especially for older cars or borrowers with poor credit. Check this before you explore, because it affects whether you can even finance the car you want.

The age and mileage of the car change what you can borrow and what it costs

Lenders have different rules for how old a car can be. Most will finance cars up to 10 years old, but some stop at 8 years, and a few will go to 12 or 15 years. Older cars cost more to borrow for because they are worth less and more likely to break down. A 2015 car at 120,000 miles might get a 7 percent rate, while a 2019 car at 60,000 miles gets 5 percent, all else equal.

Mileage also matters. Most lenders want to see fewer than 100,000 miles, and some cap at 80,000. If the car you want has higher mileage, fewer lenders will touch it, and those who do will charge more. This is why it is worth getting a pre-approval before you fall in love with a specific car — you might find out the lender will not finance it, or will only do so at a rate that makes the payment unaffordable.

Some lenders also require a pre-purchase inspection for older or higher-mileage cars. This is a mechanic's report that confirms the car is in decent shape. It costs $100 to $200 and takes a few days, so budget for that time if the lender requires it.

Compare total cost, not just the monthly payment

When you are comparing loans, do not focus only on the monthly payment. A 72-month loan has a lower payment than a 48-month loan, but you pay far more interest over time. On a $12,000 loan at 7 percent, a 48-month term costs about $1,800 in interest, while a 72-month term costs about $2,800. That extra $1,000 is real money.

Ask each lender for the total amount you will pay over the life of the loan, not just the monthly payment. This is called the finance charge, and it includes all interest and fees. Compare the finance charge across lenders, not just the rate. A lender with a 6.5 percent rate over 60 months might cost less total than a lender with a 6 percent rate over 72 months.

Also check whether the loan has a prepayment penalty. Some lenders charge a fee if you pay off the loan early. If you think you might pay it off faster (because you get a bonus, inherit money, or sell another car), a loan without a prepayment penalty gives you flexibility.

Frequently Asked Questions

Should I get pre-approved before I find a car?

Yes. Pre-approval tells you what you can afford and locks in a rate for 30 to 60 days. It also gives you negotiating power at the dealership because the dealer knows you have cash and can walk away. You can shop with confidence knowing your real monthly payment.

What credit score do I need to get a used car loan?

Most banks require a score above 650, but credit unions often work with scores as low as 580 to 600. If your score is below 600, a credit union is your best option. Dealership financing is available at almost any score, but the rate will be high — often 12 to 18 percent.

Can I refinance a used car loan later if rates drop?

Yes. If rates fall and your credit improves, you can refinance through a bank or credit union. Refinancing typically takes two to three weeks and involves a new process and credit pull. It makes sense only if the new rate is at least 1 percentage point lower and you plan to keep the car long enough to recoup the refinancing costs.

What if the dealership offers me 0 percent financing?

Take it if you meet the terms. Zero percent financing is real and is usually offered by the car manufacturer's captive lender to buyers with excellent credit (typically 740 or higher). However, you usually cannot combine it with rebates, so compare the total cost. Sometimes a lower rate plus a rebate costs less than zero percent.

How much should I put down on a used car?

Put down 10 to 20 percent if you can without draining your emergency fund. A larger down payment lowers your rate and monthly payment, but you need savings for repairs and unexpected expenses. If you have less than three months of expenses saved, put down 10 percent or less and keep the rest in reserve.