BMW 4 Series (2016) is 305 mm (12.01 inch) longer and 84 mm (3.31 inch) wider than Mercedes B-Class (2017).
Mercedes B-Class (2017) is 174 mm (6.85 inch) higher, 190 kg (419 lbs) lighter and has 41 liters (1.45 ft3) bigger cargo space than BMW 4 Series (2016).
