BMW 5 Series Gran Turismo (2016) is 161 mm (6.34 inch) longer, 218 mm (8.58 inch) higher and has 80 liters (2.83 ft3) bigger cargo space than BMW 8 Series (G15) (2019).
BMW 8 Series (G15) (2019) is 1 mm (0.04 inch) wider and 91 kg (201 lbs) lighter than BMW 5 Series Gran Turismo (2016).