The 2019 BMW X3 is available as a 4-door, 5-seat sport utility. Starting at $41,000, the 2019 BMW X3 4x2 is powered by a 2.0L , 4 -cylinder engine mated to an automatic transmission that returns an EPA estimated 23-mpg in the city and 30-mpg on the highway. The top of the line 2019BMWX3M40i AWD , priced at $ 54,650 , 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 27-mpg on the highway.