BMW 3 Series Gran Turismo (2014) is 101 mm (3.98 inch) higher, 174 kg (384 lbs) lighter and has 80 liters (2.83 ft3) bigger cargo space than BMW 8 Series (G16) (2020).
BMW 8 Series (G16) (2020) is 258 mm (10.16 inch) longer and 104 mm (4.09 inch) wider than BMW 3 Series Gran Turismo (2014).