What determines your car loan rate
Your car loan rate is set by the lender based on how risky they think it is to lend you money. The main factors are your credit score, the size of your down payment, how long you want to borrow for, the age and value of the car, and current market conditions. A lender with a 750 credit score might get offered 4.5 percent while someone with a 620 score gets offered 8.2 percent from the same bank — the difference reflects how likely each borrower is to repay on time.
Rates also vary by lender type. Banks, credit unions, and captive finance companies (owned by car manufacturers) all price loans differently. A credit union member might get a better rate than a bank customer because credit unions are member-owned and often price more competitively. Captive lenders like Ford Credit or Toyota Financial Services sometimes offer promotional rates to move inventory, but those rates are only available if you buy their brand.
The loan term — how many months you borrow for — also moves your rate. A 36-month loan typically carries a lower rate than a 72-month loan because the lender's money is at risk for less time. However, the monthly payment on the shorter loan is higher, so lenders use longer terms to make payments look affordable even when the total interest cost climbs.
Key Takeaways
- Your credit score is the single largest factor in your rate; a 100-point difference in score can shift your rate by 2 to 3 percentage points.
- Rates vary significantly by lender type, with credit unions often offering lower rates than banks and captive lenders offering promotional rates only on their own vehicles.
- A larger down payment reduces both the amount you borrow and the lender's risk, which typically lowers your rate by 0.5 to 1 percentage point.
- Loan term length affects your rate — shorter terms get lower rates, but monthly payments are higher, so the total interest you pay depends on both the rate and the length.
- Current market interest rates set a floor; your personal rate is that floor plus a markup based on your credit and the loan details.
How credit score affects your rate
Lenders use your credit score as the primary measure of repayment risk. The three major credit bureaus — Equifax, Experian, and TransUnion — calculate scores based on payment history, amounts owed, length of credit history, credit mix, and recent inquiries. Most auto lenders use the FICO Auto Score, a version of the FICO score designed specifically for car loans.
The relationship between score and rate is not linear. A borrower moving from 620 to 650 might see a rate drop of 1 to 1.5 percentage points. A borrower moving from 750 to 780 might see a drop of only 0.25 percentage points. Lenders price the biggest risk premium into the lowest scores because default rates are highest in that range.
You can check your own credit score through the three bureaus' free annual reports at annualcreditreport.com, though that report does not include your FICO score itself. Many credit card issuers and banks now show your FICO score free in your online account. Knowing your score before you shop for a loan lets you understand what rate range to expect and whether it makes sense to delay the purchase and work on improving your score first.
The role of down payment and loan-to-value ratio
Your down payment affects your rate because it changes the loan-to-value ratio, or LTV — the amount you borrow divided by what the car is worth. A car worth $25,000 with a $5,000 down payment means you are borrowing $20,000, for an LTV of 80 percent. The same car with a $10,000 down payment means an LTV of 60 percent.
Lenders see high LTV loans as riskier because if you stop paying and they repossess the car, they may not recover the full loan amount when they sell it at auction. A 60 percent LTV loan is less risky than an 80 percent LTV loan, so the rate is lower. The difference is usually 0.5 to 1 percentage point, though it varies by lender and credit score.
Down payment size also signals to the lender that you have skin in the game — you have already committed your own money. A larger down payment can sometimes offset a lower credit score slightly, though it will not eliminate the rate difference entirely. If you have the cash available, putting down 15 to 20 percent of the purchase price is often the threshold where lenders noticeably improve your rate.
How loan term length changes your rate and total cost
A 36-month loan typically carries a lower interest rate than a 60-month or 72-month loan. The difference is usually 0.5 to 1.5 percentage points, depending on the lender and market conditions. However, the monthly payment on a 36-month loan is substantially higher because you are paying back the principal faster.
The total interest you pay depends on both the rate and the term. A $20,000 loan at 5 percent for 36 months costs about $1,616 in interest. The same loan at 5.5 percent for 60 months costs about $2,915 in interest — nearly double, even though the rate is only 0.5 percentage points higher. Lenders advertise the monthly payment because it looks lower on a longer term, but the total cost to you is significantly higher.
Longer terms also carry more risk of being underwater on the loan — owing more than the car is worth — especially in the first few years. If you total the car early in a 72-month loan, your insurance payout may not cover what you still owe. Shorter terms reduce that risk, which is one reason lenders price them more favorably.
Market rates and how lenders price above the base rate
The base rate that lenders use as a starting point comes from the Federal Reserve's benchmark rates and the cost of funds in the bond market. When the Fed raises its benchmark rate, lenders' costs go up, and car loan rates rise across the industry. When the Fed cuts rates, lenders typically lower their rates, though not always when ready or by the full amount.
On top of the base rate, each lender adds a markup based on your personal risk profile. That markup is where your credit score, down payment, loan term, and the car's age all come into play. A lender might offer a base rate of 4 percent, then add 2 percentage points for a borrower with a 650 credit score, resulting in a 6 percent offer. The same lender might add only 0.5 percentage points for a 750-score borrower, resulting in a 4.5 percent offer.
Different lenders use different markup formulas, which is why shopping around matters. One bank might price a 72-month loan at 6.2 percent while another prices it at 5.8 percent for the same borrower. The difference is not random — it reflects different risk models and different competitive strategies. A credit union might price aggressively to attract members, while a captive lender might price high because they are also making money on the vehicle sale.
Rate differences between new and used cars
Used cars typically carry higher rates than new cars, all else equal. A new car comes with a manufacturer's warranty, which reduces the lender's risk if the car breaks down and you cannot pay. A used car has no warranty (unless certified pre-owned), so the lender bears more risk that repair costs will strain your finances.
The age of the used car matters significantly. A 2-year-old car might carry a rate only 0.5 percentage points higher than a new car. A 10-year-old car might carry a rate 2 to 3 percentage points higher. Very old cars — typically those over 12 to 15 years old — may not may have access to for traditional financing at all; some lenders straightforward will not lend on them because the risk is too high and the collateral value is too low.
Mileage also affects the rate. A 2-year-old car with 20,000 miles is priced more favorably than a 2-year-old car with 80,000 miles. The higher-mileage car is closer to major maintenance events like transmission service or timing belt replacement, which increases the risk that you will default if those repairs are expensive.
Where to shop for the best rate
Banks, credit unions, and online lenders all offer car loans, and rates vary enough that shopping is worth your time. Start by checking your own bank and any credit unions you are a member of or may be able to access to join. Credit unions often have lower rates than banks, especially for borrowers with good credit. Many credit unions allow you to join if you live or work in their service area or if a family member is already a member.
Online lenders and loan marketplaces let you compare offers from multiple lenders without visiting each one in person. You submit your information once, and lenders send you offers. Each inquiry counts as a hard pull on your credit, but multiple inquiries within 14 days typically count as a single inquiry for credit scoring purposes, so shopping around does not significantly damage your score.
Get pre-approved before you go to the dealership. A pre-approval letter shows you what rate and loan amount you may have access to for, which gives you negotiating power. Dealerships often have captive lenders on site and may offer promotional rates, but those rates are only available if you buy their brand. Comparing your pre-approval rate to the dealership's offer tells you whether the dealer is giving you a better deal or marking up the rate.
Frequently Asked Questions
Can I negotiate my car loan rate?
You cannot negotiate the rate itself — it is set by the lender's pricing model based on your credit, down payment, and loan details. However, you can negotiate the terms: offering a larger down payment, choosing a shorter loan term, or selecting a different vehicle can all result in a lower rate. Shopping multiple lenders is the most effective way to get a better rate.
Does getting pre-approved hurt my credit score?
A pre-approval is a hard inquiry, which temporarily lowers your score by a few points. However, multiple inquiries from auto lenders within 14 days count as a single inquiry for scoring purposes. Shopping around for the best rate within a two-week window minimizes the credit impact and is worth doing.
What is a good car loan rate right now?
Rates change constantly based on market conditions and lender pricing. A good rate depends on your credit score, the loan term, and the vehicle. Check current offers from your bank and credit union to see what rates are available for your situation. Comparing at least three lenders gives you a realistic sense of what you should expect to pay.
Will paying a larger down payment lower my rate?
Yes, typically by 0.5 to 1 percentage point. A larger down payment lowers your loan-to-value ratio, which reduces the lender's risk. The exact impact varies by lender, so it is worth asking what rate you would get with different down payment amounts before you decide how much to put down.
Why is my rate higher than the advertised rate?
Advertised rates are usually the best rates available, offered to borrowers with excellent credit and strong down payments. Your personal rate is based on your credit score, down payment, loan term, and the vehicle. If your credit score is lower or your down payment is smaller than the advertised scenario, your rate will be higher. This is normal and expected.