A Vehicle Identification Number (VIN) is unique to each vehicle since 1981. They improve due diligence when buying a car, as the VIN can look for theft and major damage to the car. Many stolen vehicles flow across the US-Canada border, and Detroit is a known hot spot. So if you are interested in buying a used car in Canada, you may feel compelled to do due diligence to make sure the car is not stolen. Fortunately, you can acquire a car history report quite easily or use a VIN validator to check for a fake VIN.