Where to find the VIN on a car

Every car and light truck sold in the United States since model year 1981 carries the same 17-character Vehicle Identification Number in at least two places on the vehicle and on every piece of its paperwork. Here is where to look, in the order that takes the least effort.

1. Base of the windshield, driver's side

Stand outside the car at the front left corner and look down through the windshield at the edge of the dashboard. A small metal plate, usually black with stamped or printed characters, sits where the glass meets the dash. It is readable without opening the door, which is why dealers and inspectors check it first. On a sunny day, shade the glass with your hand; on a dirty car, wipe that corner. If the plate looks newer than the dashboard around it, or the rivets look disturbed, treat that as a warning sign rather than a curiosity.

2. Driver's door-jamb sticker

Open the driver's door and look at the frame near the latch, or on the door's inside edge. The certification label is a rectangular sticker that repeats the VIN alongside the month and year of manufacture, the gross vehicle weight rating, the recommended tire pressures and the paint code. This is the most useful label on the car, because it also gives you the build date, which you can compare with the model year the VIN decodes to. A build date in late 2018 on a 2019 model year is normal; a build date that is later than the year on the title is not.

3. Title, registration and insurance card

The title is the legal document that proves ownership and is where title brands like salvage or rebuilt are printed. The registration card and the insurance card also carry the VIN. Ask the seller to photograph the title with the VIN and the brand line visible before you travel to see the car. A seller who will not show the title is telling you something.

4. The online listing

Almost every dealer listing publishes the VIN, often under "vehicle details" or in the photos of the window sticker. Private sellers sometimes leave it out. It is normal to ask for it: you cannot check a car without it, and there is nothing a buyer can do with a VIN that harms the seller.

Other places on the vehicle

The VIN is also stamped on the engine block, on the frame of trucks and body-on-frame SUVs, sometimes under the spare tire and on the underside of the hood. You will not normally need these unless the two main locations disagree.

Reading the number correctly

• A VIN has exactly 17 characters. If you count 16 or 18, you have misread one.
• The letters I, O and Q are never used, to avoid confusion with 1 and 0. If you think you see one, it is a digit.
• Position 9 is a check digit. On vehicles built for North America it is calculated from the other sixteen characters, which is how the decoder catches a typo before it looks anything up.
• Position 10 is the model year. Position 11 is the assembly plant. Positions 12 to 17 are the serial number.

What to do if two VINs don't match

The windshield plate, the door-jamb sticker and the title must show the same 17 characters. If any of them differs, even by one character, walk away. A mismatch means either a clerical error on the title, which the seller must fix at the DMV before the car can legally change hands, or a vehicle assembled from parts of more than one car, or a stolen car with a swapped plate. None of those is your problem to solve as a buyer, and no discount makes it worth taking on.

The same goes for a missing or damaged windshield plate, a door-jamb label that has been painted over or replaced, and a title that shows a different model year from the one the VIN decodes to.

Once you have the VIN

Decode it for free to confirm the make, model, year, engine and plant match what the seller told you. Then check the records: open recalls, owner complaints, crash-test ratings and whether the asking price is inside the market range for the same year and trim. For a private-party purchase, add a title check from an NMVTIS-approved provider; see title brands explained.