BMW 7 Series (2020) is 490 mm (19.29 inch) longer, 124 mm (4.88 inch) wider, 29 mm (1.14 inch) higher and has 45 liters (1.59 ft3) bigger cargo space than Mercedes CLA-Class (2015).
Mercedes CLA-Class (2015) is 530 kg (1,168 lbs) lighter than BMW 7 Series (2020).