What does VIN stand for?
VIN stands for Vehicle Identification Number. People often say “VIN number,” although the word “number” is already included in the abbreviation. For modern vehicles, the standard format contains 17 letters and numbers.
The three main VIN sections
What each VIN position does
| Position | Typical role |
|---|---|
| 1–3 | World Manufacturer Identifier (WMI) |
| 4–8 | Manufacturer-defined vehicle attributes |
| 9 | Check digit in the North American validation system |
| 10 | Model-year code |
| 11 | Plant identifier, where assigned by the manufacturer |
| 12–17 | Sequential / production identifier within the VIS |
Where to find the VIN
- Driver-side dashboard near the windshield
- Driver-side door or door-jamb label
- Vehicle title or registration
- Insurance documents
- Manufacturer-specific frame or body locations
Characters not used in standard VINs
Standard 17-character VINs do not use the letters I, O or Q because they can be confused with the numbers 1 and 0.
Position 9 and position 10 are different
Position 9 is a mathematical validation character, while position 10 is the model-year code. You can test the ninth character with our VIN check digit calculator and read the tenth character with the VIN year decoder and chart.
What a VIN does not tell you by itself
The VIN identifies the vehicle and supports specification decoding, but the characters alone do not provide a complete accident, title, ownership, odometer or service history. Those records come from separate data sources.
Decode the complete VIN
If you have all 17 characters, the technical VIN decoder uses NHTSA vPIC to retrieve the available manufacturer-reported vehicle data rather than interpreting only one or two positions.