BMW 3 Series Touring (2018) is 13 mm (0.51 inch) longer, 33 mm (1.30 inch) wider and has 25 liters (0.88 ft3) bigger cargo space than Mercedes CLA-Class (2020).
Mercedes CLA-Class (2020) is 9 mm (0.35 inch) higher and 269 kg (593 lbs) lighter than BMW 3 Series Touring (2018).