What is a VIN Number? A VIN or the vehicle's identification number is a unique string, which includes the serial no which is used by the automotive industry to identify cars, bikes or any vehicles. VIN numbers were first used in the year 1954 in USA. How to lookup VIN details? • Enter the 17 digit VIN number in the input field above and click search. • Sit back and wait till we decode the VIN and lookup the VIN number.• Your VIN has been decoded.