VIN (Vehicle Identification Number)
A vehicle identification number, commonly abbreviated to VIN, is a unique code including a serial number, used by the automotive industry to identify individual motor vehicles, towed vehicles, motorcycles, scooters and mopeds as defined in ISO 3833.
There are several places where you can look up VIN of your vehicle.
Sticker in driver's door frame
If in the U.S. there will be a sticker in the driver's door frame that gives the month and year of manufacture. In the photo below, 10/04 at the upper right of the sticker indicates my car was manufactured in October, 2004. It was sold in the U.S. as an '05 model, and went into service in November, '04.
Engrave next to rear fuse box
VIN is engraved next to fuse box under right side rear seat. Since here the VIN is engraved, this place is used by authorities to identify a vehicle without doubts.
You can access through instrument cluster hidden menu.