Mercedes GL-Class (2015) is 176 mm (6.93 inch) longer, 67 mm (2.64 inch) wider, 432 mm (17.01 inch) higher and has 235 liters (8.30 ft3) bigger cargo space than Porsche Panamera (2014).
Porsche Panamera (2014) is 811 kg (1,788 lbs) lighter than Mercedes GL-Class (2015).