2017 BMW 4 Series 440i xDrive. Nothing short of irresistible, our Accident Free 2017 BMW 4 Series 440i xDrive Convertible is brought to you in Glacier Silver Metallic! Powered by a TurboCharged 3.0 Liter TwinPower 6 Cylinder offering 320hp with the 8 Speed Automatic... via AutoRevolution