BMW 7 Series (2015) is 806 mm (31.73 inch) longer, 122 mm (4.80 inch) wider, 45 mm (1.77 inch) higher and has 174 liters (6.14 ft3) bigger cargo space than Mercedes A-Class (2019).
Mercedes A-Class (2019) is 405 kg (893 lbs) lighter than BMW 7 Series (2015).