The 2018 BMW 4 Series, Coupe, Convertible and Gran Coupe, have a 248 horsepower twin-turbo engine on the 430i and a 320 horsepower for the top-of-the-line 440i, mated to the eight-speed Steptronic Sport Automatic transmission or an available six-speed manual transmission on the BMW 4 Series Coupe (430i, 440i, and 440i xDrive). The new BMW 4 Series Coupe and new BMW 4 Series Gran Coupe both now come with stiffer suspension featuring more advanced damping technology, an upgraded steering set-up and a lower center of gravity than the BMW 3 Series. The BMW M4 Coupe and BMW M4 Convertible will have a 425 horsepower six-cylinder engine with M TwinPower Turbo technology. The 2018 BMW 4 Series will be available as 430i, 440i xDrive models starting this March and pricing will be announced closer to the vehicle launch.
