BMW 3 Series Gran Turismo (2014) is 312 mm (12.28 inch) longer, 305 mm (12.01 inch) higher and has 376 liters (13.28 ft3) bigger cargo space than McLaren 650S Coupe (2015).
McLaren 650S Coupe (2015) is 265 mm (10.43 inch) wider and 267 kg (589 lbs) lighter than BMW 3 Series Gran Turismo (2014).