VIN guide
How to read a VIN
For modern road vehicles, a VIN normally has 17 characters. It identifies a vehicle, but it does not tell you whether that vehicle has been maintained, damaged, or stolen.
The three VIN sections
- 1–3: WMI
- The World Manufacturer Identifier identifies the manufacturer and broad production region.
- 4–8: vehicle description
- These positions describe attributes selected by the manufacturer, such as platform, body, restraint, or engine.
- 9: check digit
- For many U.S.-market vehicles, this character helps detect a transcription error.
- 10: model year
- Model-year codes repeat, so the surrounding VIN and decoder data provide the necessary context.
- 11–17: plant and sequence
- These positions typically include the assembly plant and the manufacturer’s serial sequence.
Why a VIN decoder is useful
Many positions are manufacturer-defined, so a decoder is a more reliable way to turn the identifier into readable vehicle information. Available data can include make, model, body class, engine, and plant details.
Use it as a starting point
Compare the VIN on the dashboard, door label, paperwork, and listing. Then decode the VIN, review recall information, use appropriate title and history sources, and arrange an inspection before buying a used vehicle.