A low price in a car ad gets you in the door. The number that matters is the one on the contract. Extra fees and add-ons often appear late in the process, in the finance office, after hours of test drives and paperwork, when buyers are tired and want to be done. A little preparation keeps the two numbers close.
What the advertised price should include
Under U.S. consumer protection law, an advertised price is supposed to be one a customer can actually pay. The FTC has told dealers that the only charges they may leave out of an advertised price are government charges such as taxes and registration fees. It has warned dealer groups and sued dealers that advertised low prices and then added hidden fees.
Where the price usually creeps up
- Dealer fees such as “documentation,” “prep,” or “reconditioning” fees that were not in the ad
- Add-ons such as extended warranties, paint or fabric protection, window etching, or GAP insurance, sometimes included without a clear explanation
- Financing terms that change the total cost even when the monthly payment sounds fine
Before you go
- Save the ad. Take a screenshot that shows the price, the vehicle, and the date.
- Ask for the out-the-door price in writing. Email or text the dealer and ask for the total, with every fee listed line by line.
- Get a loan quote first. A pre-approval from your bank or credit union gives you a rate to compare against dealer financing.
At the dealership
- Compare the contract to the written quote. If the total is higher and the difference is not taxes or government fees, ask what each new charge is.
- Say no to extras you did not ask for. Optional products should not be required to get the advertised price.
- Focus on the total, not the monthly payment. A longer loan can make a higher price look affordable.
- Take your time. You can take the paperwork home or walk away. Bring a friend or family member, especially for an older relative who may feel pressured.
If it already happened
Gather the ad, your written quote, and the contract. Contact the dealer in writing first. If you believe you were misled, report it to the FTC at ReportFraud.ftc.gov and to your state attorney general’s consumer protection office.
Sources: FTC: Buying a New Car; FTC price transparency guidance for auto dealers (2026).