McLaren 570GT (2017) is 206 mm (8.11 inch) wider, 605 kg (1,334 lbs) lighter and has 20 liters (0.71 ft3) bigger cargo space than Mercedes GLC-Class (2015).
Mercedes GLC-Class (2015) is 125 mm (4.92 inch) longer and 458 mm (18.03 inch) higher than McLaren 570GT (2017).