The 2017 BMW X4 is available as a 4-door, 5-seat sport utility. Starting at $45,550, the 2017 BMW X4 xDrive28i is powered by a 2.0L, 4-cylinder engine mated to an automatic transmission that returns an EPA estimated 20-mpg in the city and 27-mpg on the highway. The top of the line 2017 BMW X4 M40i, priced at $58,100, is powered by a 3.0L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 19-mpg in the city and 26-mpg on the highway.