What should I look for in a used BMW M3 sports?
BMW's mechanicals are generally very good, but only if they're looked after properly. The service schedule is tough on the M3 and owners might have been tempted to skimp a bit if their finances were getting a bit tight, so check out the service records for peace of mind that all the work has been done.
Few affordable performance cars have a stronger image than the M3, and the overwhelming desire to own one can blind some buyers to the truth about the example they're considering. You must do a vehicle history check - these cars are wanted by crooks as well as legitimate motorists.
Try to contact previous owners via details on the V5 logbook and build up a picture of the car's past. Has it been thrashed on track days? Has there been any crash damage? If yes, who did the repairs and did they do a good job? Does the price reflect the vehicle you're looking at, not what the seller thinks you should be paying?