Mercedes E-Class (2014) is 24 mm (0.94 inch) longer and 305 kg (672 lbs) lighter than Porsche Cayenne (2018).
Porsche Cayenne (2018) is 100 mm (3.94 inch) wider, 245 mm (9.65 inch) higher and has 130 liters (4.59 ft3) bigger cargo space than Mercedes E-Class (2014).