BMW 3 Series Touring (2017) is 351 mm (13.82 inch) longer, 31 mm (1.22 inch) wider and has 154 liters (5.44 ft3) bigger cargo space than Mercedes A-Class (2017).
Mercedes A-Class (2017) is 4 mm (0.16 inch) higher and 359 kg (791 lbs) lighter than BMW 3 Series Touring (2017).