Was looking for a used 4x4 truck for my son's 1st car so I started by ppurchasing a 5 carfax package.. 1st one I looked at was listed with 129k miles. Ran a carfax check and discovered the vehicle had at least 247k. On to the next. Seller told me he didn't know the vehicle history but the odometer had probably been rolled over at least twice. Ran my 2nd carfax report and discovered the vehicle mileage to be only 130k. My son has a great new blazer now. I used the remaining reports to confirm claims and purchase my daughters car as well. Thanks carfax. Jud erwin