BMW 4 Series Gran Coupe (2018) is 245 mm (9.65 inch) longer and 40 mm (1.57 inch) wider than Mercedes B-Class (2017).
Mercedes B-Class (2017) is 168 mm (6.61 inch) higher, 417 kg (919 lbs) lighter and has 5 liters (0.18 ft3) bigger cargo space than BMW 4 Series Gran Coupe (2018).
