BMW 5 Series Gran Turismo (2015) is 460 mm (18.11 inch) longer, 270 mm (10.63 inch) higher and has 150 liters (5.30 ft3) bigger cargo space than Mercedes AMG GT (2015).
Mercedes AMG GT (2015) is 39 mm (1.54 inch) wider and 485 kg (1,069 lbs) lighter than BMW 5 Series Gran Turismo (2015).