The 2010 BMW X5 is available as a 4-door, 5-seat sport utility. Starting at $47,600, the 2010 BMW X5 xDrive30i is powered by a 3.0L , 6 -cylinder engine mated to an automatic transmission that returns an EPA estimated 15-mpg in the city and 21-mpg on the highway. The top of the line 2010BMWX5xDrive35d , priced at $ 51,300 , 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.