Mercedes GL-Class (2014) is 291 mm (11.46 inch) longer, 44 mm (1.73 inch) wider, 162 mm (6.38 inch) higher and has 10 liters (0.35 ft3) bigger cargo space than Porsche Cayenne (2019).
Porsche Cayenne (2019) is 395 kg (871 lbs) lighter than Mercedes GL-Class (2014).