BMW 3 Series Touring (2015) is 341 mm (13.43 inch) longer, 31 mm (1.22 inch) wider and has 154 liters (5.44 ft3) bigger cargo space than Mercedes A-Class (2015).
Mercedes A-Class (2015) is 4 mm (0.16 inch) higher and 150 kg (331 lbs) lighter than BMW 3 Series Touring (2015).