BMW 4 Series (2020) is 42 mm (1.65 inch) higher, 324 kg (714 lbs) lighter and has 20 liters (0.71 ft3) bigger cargo space than BMW 8 Series (G15) (2018).
BMW 8 Series (G15) (2018) is 75 mm (2.95 inch) longer and 50 mm (1.97 inch) wider than BMW 4 Series (2020).
