The 2020 BMW 540 is available as a 4-door, 5-seat sedan. Starting at $59,450, the 2020 BMW 540 RWD is powered by a 3.0L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 22-mpg in the city and 30-mpg on the highway. The top of the line 2020 BMW 540 AWD, priced at $61,750, is powered by a 3.0L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 22-mpg in the city and 29-mpg on the highway.