BMW 5 Series (2020) is 397 mm (15.63 inch) longer, 189 mm (7.44 inch) higher and has 180 liters (6.36 ft3) bigger cargo space than Mercedes AMG GT (2014).
Mercedes AMG GT (2014) is 72 mm (2.83 inch) wider and 39 kg (86 lbs) lighter than BMW 5 Series (2020).