The carfax on my car has an odometer issue. It spent time in Canada and they wrote the miles down as KM one year, then back to miles the next. Threw me for a loop when I first saw it. Also, Carfax doesnt show accidents unless a report is filed. The wife backs into the 355 and you pay the bodyshop cash to fix it, that doesn't show up. The Carfax is just one piece of the puzzle to help you pull the wallet out....or push it back in!