The 2020 BMW X6 is available as a 4-door, 5-seat sport utility. Starting at $66,600, the 2020 BMW X6 xDrive40i AWD 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 26-mpg on the highway. The top of the line 2020 BMW X6 4x2, priced at $64,300, 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 26-mpg on the highway.