McLaren 720S (2019) is 249 mm (9.80 inch) wider and 83 kg (183 lbs) lighter than Mercedes C-Class (Coupe) (2020).
Mercedes C-Class (Coupe) (2020) is 143 mm (5.63 inch) longer, 213 mm (8.39 inch) higher and has 153 liters (5.40 ft3) bigger cargo space than McLaren 720S (2019).