The problem that you are going to run into is that carfax has a cost. For free it will take the vin and tell you how many entries it has. Some of those are just the sale of the vehicle. I don't remeber the cost. I think it was 15.00 to 20.00 for a 1 time report. Luckily I go the dealer to run one for me before buying mine. (Bought used with 4k on it).