What to Check Before You Sign an Auto Loan

The documents and numbers you need to review before closing

Before you sign an auto loan, you need to see and understand five specific things: the loan amount, the interest rate, the term length, the monthly payment, and the total cost of the loan over its life. The lender is required to show you all of these in writing before you sign. Many people skip this step and discover later that they misunderstood the rate, the length, or what fees were included. Spending 20 minutes reviewing these numbers now prevents months of regret.

The document you are looking for is called the Loan Estimate or Truth in Lending Disclosure (also called a TILA form). Federal law requires lenders to give you this before you sign anything. It lists the loan amount you are borrowing, the interest rate as an annual percentage rate (APR), how many months you will pay, what your monthly payment is, and the total amount you will pay by the end of the loan. If the lender has not given you this document, ask for it by name and do not sign until you have it in your hands.

Key Takeaways

• The Loan Estimate or Truth in Lending Disclosure must show your interest rate as an APR, your loan term in months, your monthly payment amount, and the total cost of the loan.
• Compare the APR across lenders, not just the monthly payment, because a lower monthly payment can mean a longer loan that costs more overall.
• Check whether the rate is fixed (stays the same) or variable (can change), because variable rates can increase your payment later.
• Verify that fees for documentation, title transfer, and dealer markup are listed separately so you know what you are actually paying for.
• Ask the lender to explain any line item you do not understand before you sign, because you cannot change it after closing.

The interest rate and what APR actually means

The APR (annual percentage rate) is the interest rate plus any fees the lender charges, expressed as a yearly cost. This is the number you should compare across lenders, not the interest rate alone. Two lenders might quote you different interest rates, but when you add in their fees, the APR tells you which one actually costs less. The Loan Estimate shows this as a single percentage — for example, 6.5% APR.

Ask whether the rate is fixed or variable. A fixed rate stays the same for the entire loan. A variable rate can change after a set period, which means your monthly payment could go up. Most auto loans are fixed, but some lenders offer variable rates with a lower starting APR. If the rate is variable, the Loan Estimate must tell you when it can change and what the maximum rate could be. Do not accept a variable rate unless you understand and can afford the highest possible payment.

The rate you are offered depends on your credit score, the age and mileage of the car, how much you are putting down, and how long the loan is. If you have not checked your credit score recently, do that before you shop for a loan. You can see your score free at annualcreditreport.com. A higher score gets you a lower rate, so if your score is lower than you expected, you might wait a few months to improve it before borrowing.

Loan term and total cost — why 84 months costs more than 60

The loan term is how many months you will make payments. Common terms are 36, 48, 60, 72, and 84 months. A longer term means a lower monthly payment but a higher total cost, because you pay interest for more months. For example, a $25,000 loan at 6% APR costs about $467 per month over 60 months and about $396 per month over 84 months — but you pay roughly $3,000 more in total interest over the 84-month loan.

The Loan Estimate shows both the monthly payment and the total amount you will pay. Look at the total, not just the monthly number. If you can afford a higher monthly payment, a shorter term saves you money. If you need the lowest possible monthly payment, accept that you will pay more overall. This is a real trade-off, not a hidden cost — but many borrowers do not notice they are making it.

Be cautious of loans longer than 72 months. At that length, you are likely to owe more than the car is worth for much of the loan, which creates problems if you need to sell or trade the car early. Ask the lender for a payoff amount at the 36-month mark so you know where you stand halfway through.

Fees and add-ons that appear on the paperwork

Beyond interest, lenders and dealers charge separate fees. The Loan Estimate lists these individually. Common ones include documentation fees (for processing paperwork), title and registration fees (required by your state), and dealer markup or acquisition fees (the dealer's profit). Some of these are unavoidable; others are negotiable.

Documentation and processing fees typically range from $50 to $300 depending on the lender. Title and registration fees are set by your state and cannot be negotiated. Dealer markup or acquisition fees are the dealer's profit on the loan itself and can sometimes be reduced if you negotiate. Gap insurance (which covers the difference between what you owe and what the car is worth if it is totaled) is optional and costs $300 to $1,000 — it is useful if you are putting down less than 20%, but you do not have to buy it from the dealer. You can often find it cheaper through your insurance company.

Read every line on the Loan Estimate. If a fee is listed and you do not know what it is, ask. Do not sign a document with unexplained charges.

What to check about the car itself

Before you finalize the loan, confirm that the vehicle identification number (VIN) on the Loan Estimate matches the VIN on the car you are buying. This sounds obvious, but mistakes happen and can create legal problems later. The VIN is a 17-character code on the dashboard, the driver's door jamb, and the title document.

Verify the mileage listed on the paperwork. The lender uses mileage to calculate the car's value and your loan-to-value ratio (how much you are borrowing compared to what the car is worth). If the mileage is wrong, the lender might have overestimated the car's value, which affects your rate and your risk if you need to sell early.

Check that the title is clear (no liens from previous loans) and that the seller's name matches the person or dealership you are buying from. If the title has a lien, the previous lender must be paid off before you take ownership. The new lender usually handles this, but confirm it on the paperwork.

Down payment and what you are financing

The Loan Estimate shows the car's purchase price, your down payment, and the loan amount (purchase price minus down payment). Verify that the down payment amount is what you agreed to. Some dealers try to reduce the down payment you promised in order to increase the loan amount and their interest income.

If you are trading in a car, the Loan Estimate should show the trade-in value as a credit toward the purchase price. Make sure this number matches what the dealer quoted you. If the trade-in value drops between the quote and the paperwork, ask why and negotiate if it seems unfair.

The loan amount is what you will actually owe. This is the number to use when you calculate your total cost. If the loan amount is higher than you expected, the down payment was lower than you thought, or the purchase price increased. Ask for an explanation before you sign.

Insurance and payment protection options

The lender will require you to carry comprehensive and collision insurance on the car for the life of the loan. The Loan Estimate does not include insurance cost, but you need to know what your insurance will be before you commit to the loan. Get a quote from your insurance company and add that to your monthly payment to see your true cost.

Some lenders offer payment protection plans (sometimes called loan protection or payment gap insurance) that cover your payment if you lose your job or become disabled. These are optional and cost $200 to $800. They are not the same as gap insurance (which covers the car's value). Read the terms carefully — most have waiting periods and exclusions, and they may not cover all situations. Decide whether you need this coverage based on your job stability and emergency savings.

Red flags and what to do if something looks wrong

Do not sign if the APR is significantly higher than what you were quoted. Rates can move slightly between quote and closing, but a jump of more than 0.5% should be explained. Ask the lender why and whether they can adjust it.

Do not sign if the monthly payment is higher than you were told. A small difference (within $5 to $10) might be due to rounding, but anything larger means something changed. Ask what changed and whether you can modify the term or down payment to get back to the payment you expected.

Do not sign if you see charges you did not agree to. Dealer add-ons like paint protection, fabric protection, or extended warranties sometimes appear on the paperwork without your consent. You can refuse these and have them removed.

If something is wrong and the lender will not fix it, you have the right to walk away. You are not obligated to sign until you have reviewed everything and agreed to all terms. Take the time to read and ask questions — this is your money and your obligation for the next three to seven years.

Frequently Asked Questions

What is the difference between the interest rate and the APR?

The interest rate is the cost of borrowing the money. The APR includes the interest rate plus any fees the lender charges, expressed as a yearly percentage. APR is the number to compare across lenders because it shows the true cost.

Can I negotiate the interest rate after I see the Loan Estimate?

Yes, if you have not signed yet. You can ask the lender to lower the rate, shop with other lenders, or adjust the down payment or term to change the overall cost. Once you sign, the rate is locked in and cannot be changed.

What should I do if I find an error on the Loan Estimate?

Tell the lender immediately and ask for a corrected document. Do not sign the original. Common errors include wrong VIN, wrong mileage, wrong down payment amount, or wrong purchase price. These must be fixed before closing.

Is gap insurance worth buying?

Gap insurance is most useful if you are putting down less than 20% or financing a car that depreciates quickly. If you are putting down 25% or more, you probably do not need it. Compare the dealer's price to your insurance company's price — insurance companies often charge less.

What happens if I sign the Loan Estimate but change my mind?

Signing the Loan Estimate is not the same as signing the final loan documents. You can still walk away or shop with other lenders. The final signature on the promissory note is what locks you in. Read everything before that final signature.