BMW 7 Series (2018) is 806 mm (31.73 inch) longer, 122 mm (4.80 inch) wider, 45 mm (1.77 inch) higher and has 173 liters (6.11 ft3) bigger cargo space than Mercedes A-Class (2020).
Mercedes A-Class (2020) is 465 kg (1,025 lbs) lighter than BMW 7 Series (2018).