The 2022 BMW 840 is available as a 2-door, 4-seat coupe. Starting at $85,000, the 2022 BMW 840 RWD Coupe 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 30-mpg on the highway. The top of the line 2022BMW840AWD Convertible , priced at $ 97,300 , is powered by a 3.0LL , 6 - cylinder engine mated to an automatic transmission that returns an EPA estimated 20-mpg in the city and 27-mpg on the highway.