McLaren 650S Coupe (2015) is 211 mm (8.31 inch) wider and 307 kg (677 lbs) lighter than Mercedes CLS-Class (2015).
Mercedes CLS-Class (2015) is 428 mm (16.85 inch) longer, 214 mm (8.43 inch) higher and has 376 liters (13.28 ft3) bigger cargo space than McLaren 650S Coupe (2015).