McLaren 570GT (2017) is 157 mm (6.18 inch) wider, 150 kg (331 lbs) lighter and has 20 liters (0.71 ft3) bigger cargo space than Mercedes AMG GT (2018).
Mercedes AMG GT (2018) is 15 mm (0.59 inch) longer and 88 mm (3.46 inch) higher than McLaren 570GT (2017).