BMW 7 Series (2020) is 38 mm (1.50 inch) longer, 60 mm (2.36 inch) higher and has 75 liters (2.65 ft3) bigger cargo space than BMW 8 Series (G16) (2020).
BMW 8 Series (G16) (2020) is 30 mm (1.18 inch) wider and 106 kg (234 lbs) lighter than BMW 7 Series (2020).