Checking a VIN number for free is a great way to learn more about a vehicle's history. You can use websites like the National Insurance Crime Bureau (NICB) or iSeeCars to get basic information. These sites can tell you if a car has been reported stolen or if it has any insurance claims. Are you looking to buy a used car, or do you want to learn more about your own vehicle? I'm here to help with any other questions you might have!