I purchased a 30 day, unlimited CarFax Reports account prior to buying my used car. I re-upped the unlimited CarFax reports twice more because my used car search took more than a month. The Carfaxes are invaluable resources as a starting point in your used car search. The reports saved me countless hours by helping me to weed out a lot of vehicles I might have gone to see based solely on their online ad descriptions and photos. CarFax helped me to identify several cars that were really salvage titled vehicles, even though they had been listed as clean title, as well as spotting more than a few vehicles with odometer rollbacks. Perhaps the most helpful feature CarFax provides a private party buyer is the ability to recognize when cars are being sold by curbstoners or car flippers based upon when the title was last transferred and how soon the current owner puts a vehicle up for sale following that transaction. In addition to helping a buyer avoid negative vehicle purchase experiences, CarFax also provides value in displaying a brief summary of a car's service records, and any damage that a used vehicle might have sustained in the past. This provides the buyer with a level of confidence when meeting with the seller and being able to verify regular maintenance while at the same time ensuring that any previous damage was repaired correctly.