The cheapest car loans come from credit unions and banks, not dealerships, and your own credit score determines whether you get the lowest rate or pay thousands more

A dealership will almost always charge you more than a bank or credit union would for the same loan. Dealerships mark up the interest rate they receive from their lender — sometimes by 1 to 3 percentage points — and keep the difference. A bank or credit union quotes you their actual rate with no markup. The difference between a 4% loan and a 7% loan on a $25,000 car over five years is roughly $3,600 in extra interest you would pay.

Your credit score is the single biggest factor in what rate you receive. Someone with a score above 740 might get 3% to 4% from a credit union. Someone with a score below 620 might be offered 10% to 12% from the same lender. Before you shop for a loan, check your own credit score — you can get it free from AnnualCreditReport.com or from your bank's website. Knowing your score tells you what range of rates to expect and whether it makes sense to wait and improve your score before borrowing.

Key Takeaways

  • Credit unions typically offer lower rates than banks, and both offer lower rates than dealerships.
  • Your credit score determines your rate more than any other factor — a 100-point difference in score can mean 2 to 4 percentage points in interest rate.
  • Getting pre-approved for a loan before you visit a dealership prevents the dealer from marking up the rate and gives you a firm number to negotiate against.
  • Comparing rates from at least three lenders takes an hour and can save you hundreds or thousands in interest over the life of the loan.
  • The loan term (how many months you borrow for) affects your rate — shorter terms usually have lower rates, but longer terms have lower monthly payments.

Credit unions usually beat banks on car loan rates

Credit unions are member-owned, not-for-profit organizations, which means they return profits to members rather than shareholders. This structure often lets them offer lower rates than banks. Many credit unions also have looser lending standards than banks, so they may work with borrowers who have lower credit scores or shorter credit histories.

To join a credit union, you typically need to meet a membership requirement — working for a certain employer, living in a certain county, or belonging to a certain organization. Some credit unions have broad requirements (like "anyone who lives in this state"), while others are narrow. Start by searching the CO-OP Network or Alliant Credit Union's directory to see which credit unions you can join. If you already belong to one through your employer or school, call and ask about their car loan rates.

Banks come second. Large national banks like Chase and Bank of America usually have higher rates than credit unions but lower rates than dealerships. Smaller regional banks sometimes compete more aggressively on rate. Call or visit the websites of banks where you already have an account — they often give existing customers better rates than new customers.

Get pre-approved before you step onto a dealership lot

Pre-approval means a lender has reviewed your credit and income and told you the maximum amount and interest rate they will lend you. It takes 15 to 30 minutes and costs nothing. Pre-approval is not a promise — the lender can still deny you if your situation changes — but it is a firm offer you can take to a dealership.

When you walk into a dealership with a pre-approved loan, the dealer cannot mark up your rate. You have already locked in your number. The dealer can still try to get you to finance through them by offering a lower rate, but they rarely can — if they do, take it. More often, they will accept your outside financing and move on to selling you the car.

Get pre-approved from at least two lenders so you can compare. The process is quick enough that doing three is reasonable. Write down the rate, the term (number of months), and any fees. A rate that looks lower might come with a $500 origination fee, so compare the total cost, not just the percentage.

How your credit score affects the rate you receive

Lenders use your credit score to predict how likely you are to repay. A higher score means lower risk, so you get a lower rate. The relationship is not linear — the jump from 620 to 640 might lower your rate by 1 percentage point, but the jump from 740 to 760 might lower it by only 0.25 percentage points. Most of the benefit comes from getting above 700.

If your score is below 650, you might save more money by waiting three to six months and working to improve it than by borrowing now at a high rate. Paying down credit card balances, correcting errors on your credit report, and making all payments on time will raise your score. You can dispute errors for free at AnnualCreditReport.com.

If your score is between 650 and 700, getting pre-approved now tells you whether waiting is worth it. If you are offered 8% and you know that a 50-point score increase would drop you to 6%, the math might favor waiting. If you are offered 6.5% and a 50-point increase would only drop you to 6%, borrowing now is probably fine.

Loan term affects both your rate and your monthly payment

A loan term is how many months you have to repay. Common terms are 36, 48, 60, and 72 months. Shorter terms have lower interest rates but higher monthly payments. Longer terms have higher interest rates but lower monthly payments.

A 48-month loan might be offered at 5%, while a 72-month loan at the same lender might be 5.5%. On a $25,000 loan, the 48-month payment is roughly $575 per month and the 72-month payment is roughly $380 per month. Over the life of the loan, you pay about $2,600 more in interest with the 72-month term, but your monthly budget is easier.

The right term depends on your situation. If you can afford the higher payment, a shorter term saves you money. If the higher payment would strain your budget and make you miss payments, a longer term is safer — the interest you pay is less important than staying current on the loan.

What to compare when you get quotes from lenders

When you contact a lender for a quote, you will need to provide your income, employment, and the details of the car you want to buy (or a general price range if you have not picked one yet). The lender will pull your credit report and give you a rate quote. Write down these details for each lender:

  • The interest rate (APR)
  • The loan term in months
  • Any origination, documentation, or processing fees
  • Whether the rate is fixed (stays the same) or variable (can change)
  • Whether you can pay off the loan early without penalty
  • The total amount of interest you will pay over the life of the loan

Most car loans are fixed-rate, meaning your payment and rate never change. Some lenders offer variable-rate loans, which start lower but can increase — avoid these unless you plan to pay off the loan in a year or two. Ask whether there is a prepayment penalty if you pay the loan off early. Most lenders do not charge one, but some do, and it can cost hundreds of dollars.

Online lenders and buy-here-pay-here dealers are options for lower credit scores

If your credit score is very low (below 580) or you have no credit history, traditional banks and credit unions may decline you. Online lenders like Upstart, LendingClub, and Elevate specialize in borrowers with lower scores. Their rates are higher — often 12% to 18% — but they may be your only option.

Before you borrow from an online lender, make sure they report your payments to the credit bureaus. If they do, making on-time payments will raise your credit score over time, and you can refinance to a lower rate later. If they do not report, you get no credit benefit from the loan.

Buy-here-pay-here dealers are car dealerships that also finance the cars they sell. They typically charge very high interest rates (18% to 29%) and require weekly or bi-weekly payments in cash or at their location. They are a last resort, useful only if you cannot get a loan anywhere else and need a car when ready.

Frequently Asked Questions

Should I get pre-approved if I am buying a used car from a private seller?

Yes, even more so than with a dealership. A private seller cannot finance you, so you must bring your own loan. Pre-approval tells you the maximum you can spend and locks in your rate before you negotiate with the seller. Without it, you might fall in love with a car you cannot actually afford.

What if the dealership offers me a lower rate than my pre-approval?

Take it. The dealer has access to lenders you might not, and if they can beat your pre-approved rate, that is a genuine win. Compare the total cost including any fees, but if the dealer's offer is truly lower, accept it and cancel your pre-approval.

Can I refinance my car loan later if rates drop?

Yes. If interest rates fall or your credit score rises significantly, you can refinance — take out a new loan to pay off the old one. You will pay a new origination fee, so refinancing only makes sense if you save at least $500 to $1,000 in interest. Most refinances happen one to two years into the original loan.

Does shopping around for rates hurt my credit score?

Multiple rate inquiries from lenders within a 14 to 45-day window (depending on the credit scoring model) count as a single inquiry for credit score purposes. Getting quotes from three lenders in one week will barely affect your score. Waiting months between quotes and explore to many lenders over time will hurt your score more.

What if I have a co-signer — does that lower my rate?

Yes, if your co-signer has a higher credit score than you do. A co-signer is legally responsible for the loan if you do not pay, so lenders see it as lower risk. The rate you receive will be somewhere between your score and your co-signer's score. Make sure your co-signer understands they are liable — if you default, the lender can pursue them for the full amount.