Short, practical answers about vehicle identification numbers, based on NHTSA's VIN rules and free government tools.
- Where to find the VIN on a car
Dashboard, door jamb, engine bay and documents, by vehicle type. - What is a VIN number?
What each of the 17 characters means, and what a VIN does not tell you. - VIN year chart
Read the model year from the 10th character, 1980 to 2039. - How to find your paint code by VIN
Why the VIN rarely holds it, and where the paint-code label is by make. - How to find the engine code from a VIN
Which character is the engine code, and how to decode it. - How to check a VIN number
Free checks before you buy: matching, recalls, theft and title.
Decode a VIN with the free decoder →
Why the VIN matters
Every car sold in the United States since the 1981 model year carries a 17-character vehicle identification number. It is the one identifier that follows a car from the factory to the scrapyard: manufacturers use it to issue recalls, agencies use it to register and insure the vehicle, and history-report companies use it to match records. If you buy, sell, insure or repair a car, you will be asked for its VIN sooner or later, and knowing how to find it and read it saves time and prevents mistakes.
The guides below cover the everyday questions in the order most people meet them: where the number is, what its characters mean, how to read the model year, and how to look up details such as the paint code or engine code. The last guide explains the checks worth doing before you buy a used car.
Which guide to read first
- You have a car and need the number: start with where to find the VIN. It lists the places a VIN is printed and which ones to trust.
- You want to know what the characters mean: read what a VIN is, then the VIN year chart to read the model year from the tenth character.
- You need a part or a repair: the guides on paint codes and engine codes explain what a VIN can and cannot tell you, and where the manufacturer's labels are.
- You are about to buy a used car: go straight to how to check a VIN.
What free checks cover, and what they do not
Government tools are free and trustworthy, but they answer a narrower question than most buyers expect. NHTSA's VIN decoder tells you what the manufacturer reported when the vehicle was built, such as its model year, make, model, engine and plant. NHTSA's recall lookup tells you whether a safety recall campaign applies to that specific VIN and whether the repair has been made.
Neither tool tells you whether the car has been in an accident, whether its title is branded as salvage or flood-damaged, whether the odometer has been rolled back, or whether it has outstanding liens. Those records come from state title agencies, insurers and repair shops, and commercial vehicle history reports collect them. A free check is a good first filter and a paid report plus an independent inspection is a good last step.
Common VIN mistakes
Most problems with VINs come from a handful of avoidable errors. People copy a VIN from a listing without checking it against the car, mistake the letter O for a zero, or rely on a number printed on a single label that may have been replaced. When the number matters, such as before you pay for a car or order a part, compare the dashboard plate, the door-jamb label and the paperwork. They should all match exactly. If any of them differs, or a label looks tampered with, treat that as a serious warning and ask questions before going any further.
How we write these guides
The guides rest on NHTSA's published VIN rules and on the free government tools we link to, and we write them for people who have a car in front of them rather than for people who already know the jargon. Each guide shows the date it was last edited. If you find a mistake or something out of date, please tell us through the contact page, and read our editorial policy to see how corrections work.