BMW 8 Series (G16) (2019) is 790 mm (31.10 inch) longer, 152 mm (5.98 inch) wider and has 99 liters (3.50 ft3) bigger cargo space than Mercedes A-Class (2017).
Mercedes A-Class (2017) is 26 mm (1.02 inch) higher and 499 kg (1,100 lbs) lighter than BMW 8 Series (G16) (2019).