The cheapest car loan usually comes from a credit union or your own bank, not from the dealership
The interest rate you pay on a car loan depends almost entirely on your credit score, the loan term you choose, and where you borrow from. A dealership will almost always charge more than a credit union or bank would for the same borrower, because dealerships make money by marking up the rate. If you have a credit score above 700, you can often find rates below 5 percent from a credit union. If your score is below 650, you may pay 10 to 15 percent or higher, and your cheapest option might still be a credit union rather than a buy-here-pay-here lot.
The single biggest factor you control is shopping before you go to the dealership. Getting a pre-approval letter from your bank or credit union locks in a rate and gives you negotiating power. It also prevents the dealership from running your credit multiple times, which can lower your score further.
Key Takeaways
- Credit unions typically offer the lowest rates for borrowers with fair to good credit, often 1 to 3 percentage points lower than dealership rates.
- Your credit score is the single largest factor in your rate; a 50-point improvement can save you thousands over the life of the loan.
- Getting pre-approved at your bank or credit union before visiting a dealership locks in your rate and prevents multiple credit inquiries.
- Shorter loan terms (36 to 48 months) cost less in total interest than longer ones, even though monthly payments are higher.
- Used cars from private sellers or auctions often have lower purchase prices than dealership inventory, which reduces the amount you need to borrow.
Credit unions almost always beat dealership rates
If you belong to a credit union, check their auto loan rates before you step onto a dealership lot. Credit unions are member-owned and typically lend at rates 1 to 3 percentage points lower than banks or dealerships for the same credit profile. A rate difference of 2 percent on a $25,000 loan over 60 months saves you roughly $2,500 in interest.
You do not need to be a member to join most credit unions. Many are open to people who work in a specific industry, live in a specific county, or belong to an organization like a union or professional association. The CO-OP Network and Shared Branch network let credit union members use ATMs and services at other credit unions nationwide, so joining one near you is practical even if you move.
If you are not a credit union member, you can open an account and take out a loan in the same visit. Bring a government ID, proof of income (a recent pay stub), and proof of address (a utility bill or lease). The process usually takes 30 minutes to an hour.
Your bank's auto loan rate depends on your credit score and history with them
Banks typically offer rates higher than credit unions but lower than dealerships. If you have been banking with the same institution for years and have a good payment history, you may get a better rate than a new customer would. Some banks offer rate discounts if you set up automatic payments or if you also have a mortgage or savings account with them.
Call your bank's auto lending department or log into your online account to see what rate they would offer you. You can get a rate quote without a hard credit inquiry at many banks — they call this a "soft pull" and it does not affect your credit score. Once you have a quote, you can shop other lenders to compare.
Banks are also more flexible than dealerships about the vehicle you buy. You can finance a car from a private seller, an auction, or a dealership, and the bank does not care which. A dealership will only finance cars it sells or approves.
Online lenders and peer-to-peer platforms work for people with lower credit scores
If your credit score is below 650 or you have recent late payments, traditional lenders may decline you or offer rates above 12 percent. Online lenders and peer-to-peer platforms sometimes approve borrowers that banks and credit unions turn down, though their rates are usually higher than traditional lenders.
Online lenders like LendingClub, Upstart, and Prosper run your credit and give you a rate quote in minutes. The rate you see is the rate you get — there is no negotiation or markup at the dealership later. Read the fine print for prepayment penalties; some online lenders charge a fee if you pay off the loan early, which would erase any savings from refinancing later.
Peer-to-peer lending platforms connect you with individual investors who fund your loan. The process takes longer than a bank (usually 5 to 10 business days) but rates are sometimes lower than online lenders for the same credit profile. Verify that the platform reports your payments to the credit bureaus, because building credit history is one of the few benefits of taking a higher-rate loan.
Dealership financing is the most expensive route, even with "zero percent" offers
Dealerships make money by marking up the interest rate. A lender approves you at 6 percent, and the dealership sells you the loan at 8 percent, pocketing the difference. This is legal and standard, but it means you are always paying more at a dealership than you would if you brought your own financing.
Zero-percent financing offers sound free but come with strings. They usually require excellent credit (typically 750 or above), a large down payment (often 20 percent or more), and a shorter loan term (36 to 48 months). If you do not meet all three conditions, the dealership will offer you a higher rate instead. Even if you do may have access to, zero-percent financing often means the car's price is higher than it would be if you negotiated a discount instead.
The dealership will ask if you want to finance through them or bring your own lender. If you have pre-approval from a credit union or bank, tell them you are using outside financing. The dealership may still try to beat your rate, but they rarely do — they are counting on you to say yes to their first offer.
Shorter loan terms cost less in total interest, but monthly payments are higher
A 36-month loan costs significantly less in interest than a 60-month loan for the same amount and rate. On a $25,000 loan at 6 percent, a 36-month term costs about $2,000 in interest, while a 60-month term costs about $3,300. The difference is $1,300 — money you keep if you can afford the higher monthly payment.
The trade-off is monthly payment size. A 36-month loan on $25,000 at 6 percent costs about $738 per month. A 60-month loan costs about $483 per month. If your budget only allows $400 to $500 per month, a 36-month loan is not realistic, and stretching to 72 or 84 months will cost you even more in interest.
The cheapest approach is to borrow as little as possible and pay it back as fast as your budget allows. If you can afford $600 per month, a 48-month loan at $25,000 and 6 percent costs about $2,650 in interest — less than either the 36-month or 60-month option, and with a payment you can actually make.
Buying a used car or negotiating the purchase price reduces the loan amount
The cheapest loan is the one you do not take. Buying a used car instead of new, or negotiating a lower price, directly reduces the amount you need to borrow and therefore the interest you pay.
A three-year-old car costs 30 to 40 percent less than a new one and has most of its useful life ahead. Private sellers often price lower than dealerships for the same model and year. Auctions and online marketplaces like Craigslist, Facebook Marketplace, and Autotrader let you compare prices across many sellers at once.
If you buy from a dealership, the price is negotiable. The sticker price is not the price you pay. Research the market value of the specific car (year, make, model, mileage, condition) on Kelley Blue Book or NADA Guides before you arrive. Offer 5 to 10 percent below asking price and be ready to walk away if they will not move. Dealerships expect negotiation and build markup into their asking price.
Frequently Asked Questions
What credit score do I need to get the lowest rates?
Most lenders offer their best rates to borrowers with credit scores of 720 or above. Scores between 680 and 720 usually may have access to for rates 1 to 2 percentage points higher. Below 680, rates jump significantly. If your score is low, focus on getting pre-approved at a credit union rather than a dealership, because credit unions are more flexible with lower scores.
Can I refinance my car loan later if rates drop?
Yes. If interest rates fall or your credit score improves, you can refinance through a bank or credit union. The new lender pays off your old loan, and you start a new one at the lower rate. Refinancing costs nothing upfront, but verify there is no prepayment penalty on your current loan before you proceed. Refinancing usually makes sense if you can lower your rate by at least 1 percentage point.
Should I make a large down payment to lower my rate?
A larger down payment reduces the amount you borrow, which lowers your total interest cost, but it does not change your interest rate. Lenders set your rate based on your credit score and the loan-to-value ratio (how much you borrow compared to the car's value). A down payment of 10 to 20 percent is standard and improves your loan-to-value ratio, but putting down 50 percent does not get you a better rate than 20 percent would.
What if I have bad credit and no one will lend to me?
Buy-here-pay-here lots and in-house financing dealerships lend to people with very poor credit or no credit history, but their rates are extremely high — often 18 to 29 percent. These loans are expensive but sometimes the only option. Before you go this route, try a credit union, which is more flexible than banks, or ask a family member to co-sign your loan, which can lower your rate significantly.
Is it better to finance through the dealership or bring my own lender?
Bring your own lender. You will almost always get a lower rate from a credit union or bank than the dealership will offer. The dealership makes money by marking up the rate, so their incentive is to charge you as much as possible. Pre-approval also protects you from the dealership running your credit multiple times, which can lower your score.