BMW 6 Series Gran Turismo (2018) is 485 mm (19.09 inch) longer, 343 mm (13.50 inch) higher and has 459 liters (16.21 ft3) bigger cargo space than McLaren 600LT (2019).
McLaren 600LT (2019) is 28 mm (1.10 inch) wider and 437 kg (963 lbs) lighter than BMW 6 Series Gran Turismo (2018).