BMW 5 Series Gran Turismo (2018) is 76 mm (2.99 inch) higher, 202 kg (445 lbs) lighter and has 71 liters (2.51 ft3) bigger cargo space than BMW 6 Series Gran Coupe (2017).
BMW 6 Series Gran Coupe (2017) is 66 mm (2.60 inch) longer and 28 mm (1.10 inch) wider than BMW 5 Series Gran Turismo (2018).