BMW 4 Series (2015) is 44 mm (1.73 inch) higher, 348 kg (767 lbs) lighter and has 95 liters (3.35 ft3) bigger cargo space than BMW 8 Series (G14) (2020).
BMW 8 Series (G14) (2020) is 136 mm (5.35 inch) longer and 32 mm (1.26 inch) wider than BMW 4 Series (2015).
