The 2011 BMW X5 is available as a 4-door, 5-seat sport utility. Starting at $46,300, the 2011 BMW X5 xDrive35i (A8) is powered by a 3.0L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 16-mpg in the city and 23-mpg on the highway. The top of the line 2011 BMW X5 xDrive50i (A8), priced at $58,900, is powered by a 4.4L, 8-cylinder engine mated to an automatic transmission that returns an EPA estimated 14-mpg in the city and 20-mpg on the highway.