Most of the work in buying a used car happens before you touch the steering wheel. The records tell you what the car cannot: who owned it, whether the title is clean, whether a safety repair is waiting, and whether the mileage is believable. This checklist follows the advice of the US Federal Trade Commission, the Bureau of Justice Assistance and NHTSA, with plain steps you can tick off.
Short answer: check the paperwork and the VIN first, then look the car over and take a long test drive, and finish with an inspection by an independent mechanic. The FTC says to do the inspection even if the dealer calls the car certified or already inspected.
Step 1: The paperwork
- Title. Make sure the seller has it and that the VIN on the title matches the car. Compare the mileage on the title with the odometer, as NHTSA advises.
- Buyers Guide (dealers). A dealer must display a Buyers Guide on every used car. It says whether the car is sold as is with no dealer warranty, or with a warranty. The FTC adds that the guide tells buyers to ask for an inspection by an independent mechanic before they buy.
- Maintenance records. The Bureau of Justice Assistance suggests asking the owner, dealer or repair shop for them. If the owner has no copies, the shop that did most of the work may.
- Previous owner. The same source suggests talking to them if the current owner does not know the car’s history.
Step 2: The VIN, history report and recalls
Copy the VIN from the car itself. NHTSA says it is at the lower left of the windshield, and also on the registration and insurance card. Then run three checks.
| Check | What it tells you | Cost and limits |
|---|---|---|
| NHTSA recall lookup (US) | Whether the car has unrepaired safety recalls. A clean result reads “0 unrepaired recalls associated with this VIN” | Free. Shows only unrepaired recalls, so completed repairs do not appear. Recalls over 15 years old are usually not shown |
| NMVTIS report | Title, odometer data and certain damage history | Up to $4 per report, according to the Bureau of Justice Assistance. vehiclehistory.gov also gives some free information |
| Paid history reports (such as AutoCheck or Carfax) | May add accident and repair history. The FTC lists them without endorsing any | Prices vary by provider |
The FTC is clear that a vehicle history report is not a substitute for an independent inspection. A report only knows what was reported. A repair done at a small shop may never appear in it. For more on what free and paid checks cover, see free VIN check vs paid vehicle history report.
On recalls, use the VIN and not the license plate. NHTSA warns that a plate search may return a previous owner’s vehicle. Recall repairs are free at a dealer, so an open recall is a point to negotiate, not a reason to panic. Our guide on how to check a car for recalls covers the details.
Step 3: Check the mileage
Odometer fraud is real. NHTSA says more than 450,000 vehicles are sold each year with false odometer readings. It offers these checks, which anyone can do:
- Compare the mileage on the title with the odometer.
- Compare it with maintenance and inspection records. Look for oil change stickers on the window or door frame, in the glove box or under the hood.
- Look at the tires. NHTSA says that if the odometer shows 20,000 miles or less, the car should still have its original tires.
- Check that the gas, brake and clutch pedals show wear that fits the mileage.
- Order a vehicle history report using the VIN to look for odometer discrepancies. NHTSA notes that digital odometers are harder to check for tampering, so the car’s condition and history are the best clues.
Step 4: Look the car over
No source can replace your own eyes, and a mechanic will do this better, but a walk-around helps you decide whether the car is worth the inspection fee. Take it in daylight, on dry ground, and note anything you want the mechanic to look at:
- Body panels that do not line up, or paint that differs in color or texture from one panel to the next, which can point to repairs.
- Stains under the car after it has been parked, and a musty smell inside, which can mean a leak or water damage.
- Warning lights on the dashboard while the engine is running.
- Tires with uneven wear, and brake pedal feel that is soft or spongy.
- Every window, lock, mirror, light, wiper and the heater and air conditioning, one by one.
These are general items, not claims from a specific study. Write down what you see, take photos, and use them when you talk price or when the mechanic asks what worries you.
Step 5: The test drive
The Bureau of Justice Assistance advises driving on hills, on highways and in stop-and-go traffic. That mix tests the engine under load, the transmission at speed, and the brakes in traffic. Turn the radio off, listen for new noises, and notice whether the car pulls to one side or the steering wheel shakes. Try reverse and a few parking maneuvers before you return.
Step 6: The independent inspection
The FTC advises getting an independent mechanic to check the car, even if the dealer says it is certified or inspected. You pay the fee, but it can help you avoid a car with major problems. Choose a shop that the seller does not own or recommend. Ask the mechanic to look at the brakes, tires, suspension, steering, fluid leaks and the frame, and to give you a written list of findings with estimated repair costs. A private seller who refuses an inspection is giving you useful information.
Step 7: Decide and set up the paper trail
With the findings in hand, you can walk away, ask for a lower price, or ask the seller to complete any open recall or repair first. If you buy, start your own record on the first day. In Badger, add the car, run the VIN and recall check and log the date and mileage of the purchase. Every later service becomes part of the same history, which helps when you sell. See service history and resale value for why that matters.
Common questions
What should I check when buying a used car?
Start with the title and maintenance records, run the VIN through NHTSA’s recall lookup and a vehicle history report, check that the odometer fits the records and wear, take a long test drive, and have an independent mechanic inspect the car.
Do I need a mechanic if the car comes with a history report?
Yes. The FTC says a vehicle history report is not a substitute for an independent vehicle inspection, because the report cannot show hidden damage that was never reported.
What does “as is” mean on a used car?
On a dealer’s Buyers Guide, “As Is, No Dealer Warranty” means the dealer is not offering a warranty. The FTC’s guide says some states use a separate “Implied Warranties Only” version. Read the Buyers Guide on the window before you sign.
How can I tell if the odometer has been rolled back?
Compare the title mileage, service records and the wear on tires and pedals, and look at a history report. NHTSA says digital odometers are harder to check for tampering, so rely on the car’s condition and history.
