BMW 5 Series Gran Turismo (2020) is 71 mm (2.80 inch) higher, 149 kg (328 lbs) lighter and has 90 liters (3.18 ft3) bigger cargo space than BMW 8 Series (G16) (2019).
BMW 8 Series (G16) (2019) is 139 mm (5.47 inch) longer and 65 mm (2.56 inch) wider than BMW 5 Series Gran Turismo (2020).