Transmission Type by Car: CVT, Automatic or Manual / Mercedes-Benz / B-Class Electric DriveMercedes-Benz B-Class Electric Drive Transmission by year YearTransmission2017single-speed (direct drive)2016single-speed (direct drive)2015single-speed (direct drive)2014single-speed (direct drive) Source: U.S. EPA / DOE fuel economy data (fueleconomy.gov).