Mercedes GL-Class (2014) is 316 mm (12.44 inch) longer, 170 mm (6.69 inch) wider, 363 mm (14.29 inch) higher and has 150 liters (5.30 ft3) bigger cargo space than Peugeot 508 SW (2020).
Peugeot 508 SW (2020) is 1005 kg (2,216 lbs) lighter than Mercedes GL-Class (2014).