The 2018 BMW 740 is available as a 4-door, 5-seat sedan. Starting at $83,100, the 2018 BMW 740 RWD is powered by a 3.0L , 6 -cylinder engine mated to an automatic transmission that returns an EPA estimated 21-mpg in the city and 29-mpg on the highway. The top of the line 2018BMW740AWD , priced at $ 86,100 , is powered by a 3.0L , 6 - cylinder engine mated to an automatic transmission that returns an EPA estimated 20-mpg in the city and 29-mpg on the highway.