Which character in the VIN serves as the check digit?

The check digit in a Vehicle Identification Number (VIN) is specifically located at the 9th position. This character is critical for verifying the authenticity of the VIN and is calculated using a specific formula that incorporates the values of the other characters in the VIN. This ensures that the VIN has not been altered or improperly documented.

The check digit helps in error detection—if the VIN is incorrectly entered or printed, the check digit serves as a validation tool to confirm whether the VIN is valid or if there are discrepancies that need further investigation. This is an essential feature in preventing fraud and ensuring the integrity of vehicle registrations.