I started using carfax when I was referred by a coworker. At first I thought "what could possibly be wrong with a car. People are just trying to sell them". Boy was I wrong! Over a period of two months, I purchased the 5vin number check. The first five vehicles I found were a bust! Salvaged titles, failed emmisioms, rolled back odometer, liens, loans you name it! I ended up purchasing unlimited reports. Before I spent my time driving to the vehicle, I would run te car fax. 90% of the time when I asked for vin or license plate numbers, they would stop replying to my calls. I checked out my family's cars and found out my sisters car was in a accident that a dealer didn't report!!! I could not believe the amount if scammers there were. Ultimately it saved me days of driving and the probability of purchasing a garbage vehicle. I finally found the car I wanted. It was a 2005 toyota corolla. Carfax said nothing but great things about the car. I went through with the purchase and could never be happier! Even if you're buying from a dealer, run a carfax!!!! The last thing you want is a 5 year headache that could have been avoided for 10 dollars.