BMW 5 Series Gran Turismo (2015) is 515 mm (20.28 inch) longer, 92 mm (3.62 inch) wider, 264 mm (10.39 inch) higher and has 355 liters (12.54 ft3) bigger cargo space than Porsche 911 (2015).
Porsche 911 (2015) is 585 kg (1,290 lbs) lighter than BMW 5 Series Gran Turismo (2015).