What a car loan is and how it works

A car loan is money a bank, credit union, or dealership lends you to buy a vehicle. You agree to pay back the loan in monthly installments over a set period — usually three to seven years — plus interest. The lender holds the title to the car until you pay off the loan completely, which means they can repossess it if you stop making payments.

The monthly payment you owe depends on three things: the amount you borrow, the interest rate you receive, and how many months you have to repay it. A lower interest rate means lower monthly payments and less total interest paid over the life of the loan. Your interest rate depends mainly on your credit score, the size of your down payment, and current market rates.

Most car loans are secured loans, meaning the car itself serves as collateral. This is different from a personal loan, which is unsecured. Because the lender has the car as backup, they typically offer lower interest rates on car loans than on other types of borrowing.

Key Takeaways

  • Your monthly car payment is determined by the loan amount, interest rate, and loan term, and you should calculate all three before committing to a purchase.
  • Interest rates vary widely based on your credit score, down payment size, and where you borrow, so shopping with multiple lenders can save you thousands of dollars.
  • Getting pre-approved for a loan before visiting a dealership gives you negotiating power and prevents you from overpaying on interest.
  • Used cars typically carry higher interest rates than new cars, and longer loan terms mean you pay more interest overall even if monthly payments feel lower.
  • You should budget for insurance, registration, maintenance, and fuel in addition to your monthly loan payment when deciding whether you can afford a car.

Where to get a car loan

You have three main sources: banks, credit unions, and dealerships. Banks and credit unions are separate from the dealership and set their own rates based on your credit history. Credit unions often offer lower rates than banks if you are a member, and membership is sometimes available to people over 50 through organizations like AARP.

Dealership financing is convenient because you handle the loan at the same place you buy the car, but the interest rate is often higher. Dealerships work with multiple lenders behind the scenes and take a cut, which is why their rates tend to be steeper. Some dealerships offer special promotions — zero percent interest for a limited time, for example — but these usually require excellent credit and a larger down payment.

Getting pre-approved by a bank or credit union before you visit a dealership is a smart move. Pre-approval means the lender has reviewed your finances and told you the maximum amount and interest rate you may have access to for. Armed with this information, you can negotiate with the dealership from a position of strength and walk away if their offer is worse.

Interest rates and how your credit score affects them

Interest rates for car loans vary based on your credit score, the age of the car, the size of your down payment, and current market conditions. Someone with a credit score above 750 might receive a rate around 4 to 6 percent, while someone with a score below 620 might face rates of 10 percent or higher. The difference between a 5 percent rate and a 10 percent rate on a $25,000 loan over five years is roughly $3,000 in extra interest.

Your credit score reflects your history of paying bills on time, how much debt you carry, and how long you have had credit accounts open. If your score is lower than you would like, you have options: wait a few months while paying down other debts, ask a family member with good credit to co-sign the loan, or put down a larger down payment to reduce the lender's risk.

Interest rates also depend on whether you are buying a new or used car. New cars typically may have access to for lower rates because they are less risky for the lender — they are less likely to break down during the loan term. Used cars, especially those more than five or six years old, carry higher rates. Some lenders will not finance cars older than a certain age or with very high mileage.

Down payments and loan terms

A down payment is money you pay upfront toward the purchase price. The rest is financed through the loan. Putting down 10 to 20 percent of the car's price is standard, though some lenders allow as little as 3 to 5 percent. A larger down payment lowers the amount you need to borrow, reduces your monthly payment, and often qualifies you for a better interest rate.

The loan term is how many months you have to repay the loan. Common terms are 36, 48, 60, or 72 months. A shorter term means higher monthly payments but less total interest paid. A longer term spreads payments out, making each month more affordable, but you pay significantly more interest overall. On a $20,000 loan at 6 percent interest, a 48-month term costs about $2,150 in interest, while a 72-month term costs about $3,300.

Longer terms also carry another risk: you may owe more on the loan than the car is worth. This is called being "upside down" on the loan. If the car is totaled in an accident or you need to sell it, you could end up paying the difference out of pocket. This is why gap insurance — which covers the difference between what you owe and what the car is worth — is worth considering on longer loans.

What happens after you sign the loan

Once you sign the loan agreement, the lender pays the dealership, and you own the car — but the lender holds the title until the loan is paid off. You are responsible for insuring the car, registering it with your state, and maintaining it. The lender will require you to carry comprehensive and collision insurance, not just liability coverage.

Make your monthly payments on time. A single late payment can damage your credit score and trigger late fees. If you miss multiple payments, the lender can repossess the car. Even after repossession, you may still owe the difference between what the car sells for at auction and what you owe on the loan.

You can pay off the loan early without penalty at most lenders, though you should ask before signing. Paying extra toward the principal each month or making a lump-sum payment when you have the money can save you thousands in interest and free you from the debt sooner.

Costs beyond the monthly payment

The monthly loan payment is only part of what a car costs. You must budget for insurance, which varies by age, driving history, location, and the car's value. You also pay registration and license renewal fees to your state each year. Maintenance — oil changes, tire rotation, repairs — adds up over time, especially as the car ages. Fuel costs depend on how much you drive and the car's fuel efficiency.

When calculating whether you can afford a car, add these costs to your monthly payment. A general rule is that total car expenses should not exceed 15 to 20 percent of your monthly income. If your income is $3,000 a month, car costs should stay under $450 to $600. This includes the loan payment, insurance, fuel, and maintenance.

Red flags and what to avoid

Avoid taking out a loan longer than the car is likely to last reliably. A 72-month loan on a used car with 80,000 miles already on it is risky — the car may need major repairs before the loan is paid off. Similarly, avoid borrowing more than the car is worth. Dealers sometimes inflate prices or pressure buyers into add-ons like extended warranties or paint protection that inflate the loan amount unnecessarily.

Do not let a dealership pressure you into financing through them if you have a better rate from a bank or credit union. Dealerships earn money by marking up the interest rate, so they have incentive to convince you their financing is your only option. It is not. Walk away if the terms do not feel right.

Be cautious of "buy here, pay here" dealerships that offer loans to people with very poor credit. These loans often carry interest rates of 18 percent or higher and require weekly or bi-weekly payments in person. They are expensive and inconvenient compared to traditional loans.

Questions to ask your lender before you sign

Ask whether there are penalties for paying off the loan early. Ask what happens if you miss a payment — how many days before late fees kick in, and what the fees are. Ask whether the interest rate is fixed or variable; a fixed rate stays the same throughout the loan, while a variable rate can change. Ask what insurance is required and whether you can shop for it yourself or must use the lender's choice.

Ask for a complete breakdown of all costs: the purchase price, down payment, interest, fees, taxes, and registration. Ask whether gap insurance is available and what it costs. Ask what documents you need to provide and how long approval takes. The more you understand before signing, the fewer surprises you will face later.

Frequently Asked Questions

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

Most lenders will work with credit scores as low as 580 to 620, but rates are much higher at that level. Scores above 700 typically may have access to for rates under 7 percent. If your score is below 620, consider waiting a few months to improve it, or ask a family member with better credit to co-sign the loan.

Should I buy a new car or a used car?

New cars have lower interest rates and come with warranties, but they depreciate quickly and cost more upfront. Used cars cost less but may have higher interest rates and repair costs. The best choice depends on your budget, how long you plan to keep the car, and your comfort with potential repairs.

Can I refinance my car loan later?

Yes. If your credit score improves or interest rates drop, you can refinance to a lower rate and reduce your monthly payment or loan term. Contact your current lender or shop with banks and credit unions to see what rates you now may have access to for. Refinancing typically takes two to four weeks.

What if I cannot afford my monthly payment?

Contact your lender when ready — do not skip payments. Many lenders offer loan modification, which may lower your payment by extending the term or temporarily reducing the amount due. Some offer forbearance, which pauses payments for a short time. The sooner you reach out, the more options you may have.

Is it better to lease a car instead of financing one?

Leasing means you pay to use a car for a set period, usually two to three years, then return it. Monthly payments are often lower than loan payments, and maintenance is covered. However, you never build equity, you pay mileage fees if you drive more than allowed, and you are responsible for excess wear. Financing makes sense if you drive a lot or want to keep the car long-term.