McLaren 650S Coupe (2015) is 22 mm (0.87 inch) wider and 355 kg (783 lbs) lighter than Mercedes E-Class (2016).
Mercedes E-Class (2016) is 367 mm (14.45 inch) longer, 195 mm (7.68 inch) higher and has 396 liters (13.98 ft3) bigger cargo space than McLaren 650S Coupe (2015).