The 2020 BMW X4 M is available as a 4-door, 5-seat sport utility. Starting at $73,400, the 2020 BMW X4 M Base is powered by a 3.0L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 14-mpg in the city and 19-mpg on the highway. The top of the line 2020 BMW X4 M Competition, priced at $80,400, is powered by a 3.0L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 14-mpg in the city and 19-mpg on the highway.