The 2018 BMW 328d is available as a 4-door, 5-seat sedan. Starting at $41,750, the 2018 BMW 328d RWD Sedan is powered by a 2.0L , 4 -cylinder engine mated to an automatic transmission that returns an EPA estimated 31-mpg in the city and 43-mpg on the highway. The top of the line 2018BMW328dAWD Sports Wagon , priced at $ 46,150 , is powered by a 2.0L , 4 - cylinder engine mated to an automatic transmission that returns an EPA estimated 30-mpg in the city and 40-mpg on the highway.