BMW 3 Series Gran Turismo (2018) is 219 mm (8.62 inch) longer, 312 mm (12.28 inch) higher and has 370 liters (13.07 ft3) bigger cargo space than McLaren 600LT (2019).
McLaren 600LT (2019) is 102 mm (4.02 inch) wider and 377 kg (831 lbs) lighter than BMW 3 Series Gran Turismo (2018).