You'll need to know the VIN number in order to get a vehicle history report, as well as for other DMV paperwork. On most vehicles you can find the VIN number on the drivers side dash, viewable through the windshield. If you can't find it there, look for it inside the driver's side door on a sticker or a plate. 

If the model of your vehicle is recognized as a "high theft target," the VIN will also be located on several major body parts like the engine or fender. Manufacturers began adding extra VIN locations at the request of the Department of Transportation as an anti-theft deterrent.  

If you own a vehicle manufactured prior to 1969 (the year the dashboard became the commonplace VIN location) you may have to hunt around the car. Try looking for it on the engine block. Or in the trunk under the spare tire. Or on the front of the frame. 

If you cannot find the VIN, call your insurance agent who will have the number on record.  

It's always wise to know your VIN, or at least know where to locate it. A VIN is important to the history of a car. Through it you can learn where and when the car was manufactured, accident histories, number of previous owners and much more. 

Plus, through a VIN you can order a , or what some refer to as a VIN Check. A vehicle history report is an important to document to possess while buying a used car, serving as a lie detector, of sorts, allowing you to verify if you've been presented with all of the true facts. A vehicle history report is also great while selling a car too. It allows you to determine a reasonable asking price and serves as your backup against any possible buyer doubts.