McLaren 650S Coupe (2015) is 226 mm (8.90 inch) wider and 1127 kg (2,485 lbs) lighter than Mercedes G-Class (2017).
Mercedes G-Class (2017) is 252 mm (9.92 inch) longer, 751 mm (29.57 inch) higher and has 343 liters (12.11 ft3) bigger cargo space than McLaren 650S Coupe (2015).