I've always relied on CARFAX when buying a vehicle, but the last time I used CARFAX was the best. I had sold a truck to a guy out of state. He paid cash and headed back home with the truck. Two months after the sale, I received a notice from the buyer's state transit authority saying I owed $160 for several drive throughs at toll booths. They had photographs of my truck with my expired plates flying through these booths. In order to fight these charges, I had to set up a court date out of state. Instead of appearing in person out of state, I was able to send the CARFAX report that clearly indicated that the vehicle had been sold, was no longer in my name and the plates on the truck were expired and therefore stolen. It was the fastest way to resolve the issue. I had the proof in my hand with CARFAX faster than I ever could've done so through my state's DMV. I love CARFAX!