Not a reliable source for VIN check! Sharing my experience!
 

When I bought a car a couple of years ago, I got a CARFAX report for it prior to buying and it didn't reveal any problems with the car — no accidents or anything. Then someone recommended that I check it with other services as well. I searched my VIN number through the Internet and found a lot of similar VIN reporting websites that are not only much cheaper, but also showed that the car had been in an accident and even provided photos of the damages. I'll never use CARFAX again!