BMW 4 Series (2016) is 44 mm (1.73 inch) higher, 338 kg (745 lbs) lighter and has 95 liters (3.35 ft3) bigger cargo space than BMW 8 Series (G14) (2018).
BMW 8 Series (G14) (2018) is 145 mm (5.71 inch) longer and 32 mm (1.26 inch) wider than BMW 4 Series (2016).
