BMW 6 Series Gran Turismo (2018) is 167 mm (6.57 inch) longer, 285 kg (628 lbs) lighter and has 29 liters (1.02 ft3) bigger cargo space than BMW X6 (2018).
BMW X6 (2018) is 87 mm (3.43 inch) wider and 163 mm (6.42 inch) higher than BMW 6 Series Gran Turismo (2018).