The 2021 BMW M440 is available as a 2-door, 4-seat coupe. Starting at $58,500, the 2021 BMW M440 i xDrive is powered by a 3.0LL , 6 -cylinder engine mated to an automatic transmission that returns an EPA estimated 22-mpg in the city and 31-mpg on the highway. The top of the line 2021BMWM440RWD Convertible , priced at $ 64,000 , is powered by a 3.0LL , 6 - cylinder engine mated to an automatic transmission that returns an EPA estimated 23-mpg in the city and 31-mpg on the highway.