If you can't find the VIN number on the vehicle, you should also be able to locate it on your vehicle's title or liability insurance documents. A semitrailer's VIN is located on the front part of the semitrailer on the left side. A motorcycle's VIN is usually on the steering neck below the handlebars, although sometimes it's on the motor or on the frame near the motor.
Open the door and look around the area where the door latches to the car. You may also find the VIN number on the driver's side door pillar. The best way to see it is to look through the windshield from outside the car. On most passenger cars, you may find the VIN number on the front of the dashboard on the driver's side.