BMW 5 Series (2019) is 109 mm (4.29 inch) longer, 160 mm (6.30 inch) higher, 218 kg (481 lbs) lighter and has 219 liters (7.73 ft3) bigger cargo space than BMW 8 Series (G14) (2020).
BMW 8 Series (G14) (2020) is 35 mm (1.38 inch) wider than BMW 5 Series (2019).