McLaren 570GT (2017) is 397 mm (15.63 inch) longer, 279 mm (10.98 inch) wider and has 35 liters (1.24 ft3) bigger cargo space than Mercedes SLK-Class (2020).
Mercedes SLK-Class (2020) is 102 mm (4.02 inch) higher and 40 kg (88 lbs) lighter than McLaren 570GT (2017).