🎯 In 30 seconds: The sticker price is only the start. Decide what the car will cost you per month in total, arrange financing before you visit the dealer, negotiate the out-the-door price rather than the payment, and say no to add-ons you did not plan for. A longer loan lowers the payment and raises the total.
Total cost of ownership
Add up everything you will pay over the years you keep the car, then divide by the months:
- Depreciation: usually the largest cost, and steepest in the first years of a new car.
- Financing: the interest you pay over the loan.
- Insurance: get quotes for the exact model before you buy; it varies a lot by car.
- Fuel or charging, maintenance, tires and repairs.
- Taxes, title, registration and dealer documentation fees.
Two cars with the same payment can have very different total costs. A cheap-to-buy car with high insurance and poor reliability can cost more each month than a pricier one.
New or used
| New | Used (a few years old) | |
|---|---|---|
| Depreciation | Highest in early years | The first owner already absorbed the steepest drop |
| Warranty | Full factory warranty | May have some left; check |
| Loan rates | Often lower, sometimes promotional | Often higher |
| Risk | Known history | Get a vehicle history report and an independent mechanic inspection |
On a used car from a dealer, read the FTC Buyers Guide posted in the window. It says whether the car comes with a warranty or is sold "As Is - No Dealer Warranty", which means repairs are on you once you drive away.
Get pre-approved before the dealer
- Get a loan pre-approval from a bank or credit union. You learn the rate, term and maximum amount before you shop.
- At the dealer, negotiate the price of the car first, and ask for a written out-the-door price that includes all taxes and fees.
- Only then, ask whether the dealer can beat your pre-approval. If its financing is better, take it.
The FTC notes that the rate the dealer offers usually includes an amount that pays the dealer for arranging the loan, so the first rate offered may not be the best one available to you.
The loan-term trap, in numbers
$30,000 financed at an illustrative 7% APR:
| Term | Monthly payment | Total interest |
|---|---|---|
| 48 months | $718 | $4,483 |
| 60 months | $594 | $5,642 |
| 72 months | $511 | $6,826 |
| 84 months | $453 | $8,034 |
Stretching from 48 to 84 months cuts the payment by $265 but adds $3,551 in interest, and longer loans often carry higher rates than this table assumes. Because cars lose value fast, a long loan also raises the chance you owe more than the car is worth. That matters if it is totaled or you want to trade it in.
Add-ons and the finance office
- Extended warranties or service contracts, GAP coverage, window etching, paint protection and credit insurance are optional. Ask the price of each, in writing, before you agree.
- If a dealer says credit insurance is required, its cost must be included in the APR.
- Read the contract before signing and check every line against what you agreed. Make sure blank spaces are filled in.
- GAP coverage can make sense with a small down payment and a long loan, but compare the price with what your own insurer or credit union charges.
Your rights at the dealer
- There is no federal three-day right to cancel a car purchase. Some states require one; otherwise a return is possible only if the dealer offers it. Check with your state attorney general.
- The FTC finalized a rule aimed at dealer pricing and add-on practices (the CARS Rule). A federal appeals court vacated it in January 2025, so its specific requirements do not apply. Federal law against unfair and deceptive practices still does.
- Problems with a loan or dealer can be reported to the CFPB and your state attorney general.