 The BMW M5 has always been the leader of the performance sedan class.   Overall,  the power, handling, comfort is unsurpassed.   My trip to the local dragstrip showed 12.2 in the 1/4mile, finishing at 117mph.   Thats faster than all current Lambos, Benz sedans, pre-03 Vipers.  The car has yet to disappoint me.  but maybe I'm to preoccupied with the performance side to notice anything wrong.  If you want supercar-like performance,  but need four doors,  this is the car for you.  If you just want a status-symbol sedan, dont buy it.  This car takes a certain breed of driver to appriciate it.  It is more of a moneypit than most cars. I have averaged 11mpg,  even driving within speed-limits.  