The 2003 BMW X5 is available as a 4-door, 5-seat sport utility. Starting at $49,950, the 2003 BMW X5 4.4i (A5) 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 18-mpg on the highway. The top of the line 2003BMWX54.6is (A5) , priced at $ 66,800 , is powered by a 4.6L , 8 - cylinder engine mated to an automatic transmission that returns an EPA estimated 13-mpg in the city and 17-mpg on the highway.