McLaren 720S (2019) is 139 mm (5.47 inch) wider and 691 kg (1,523 lbs) lighter than Mercedes X-Class (2020).
Mercedes X-Class (2020) is 797 mm (31.38 inch) longer, 623 mm (24.53 inch) higher and has 957 liters (33.80 ft3) bigger cargo space than McLaren 720S (2019).