The 2013 BMW 550 is available as a 4-door, 5-seat sedan. Starting at $62,700, the 2013 BMW 550 RWD is powered by a 4.4L , 8 -cylinder engine mated to a manual transmission that returns an EPA estimated 15-mpg in the city and 22-mpg on the highway. The top of the line 2013BMW550AWD , priced at $ 65,000 , is powered by a 4.4L , 8 - cylinder engine mated to an automatic transmission that returns an EPA estimated 16-mpg in the city and 24-mpg on the highway.