Mercedes X-Class (2017) is 485 mm (19.09 inch) longer, 131 mm (5.16 inch) higher, 27 kg (60 lbs) lighter and has 490 liters (17.30 ft3) bigger cargo space than Porsche Cayenne (2014).
Porsche Cayenne (2014) is 34 mm (1.34 inch) wider than Mercedes X-Class (2017).