It seems to good to be true at that price . . . It has less miles on it now than it did last november when it was registered last AND it went from NJ to FLA with no mileage change and a few months later it has less miles - I bought an M3 with a similar story that had the same carfax story. The M3 was totaled in NY and purchased back from the insurance company and resold privately to someone in south florida. It was fixed(poorly) and sold again as an "excellent condition" car. I bought it and didn't know anything about the accident etc. All I knew is that the car I bought had a cracked windshield - I went to replace it and noticed the a-pillar had been cut out and replaced with pipe-like material - at that point I did a LOT more looking around and noticed enough repair work that the car MUST have been in a serious accident. I'm not saying this is the case with the M5, but I would be a little wary . . .