Mercedes GL-Class (2017) is 864 mm (34.02 inch) longer, 182 mm (7.17 inch) wider, 391 mm (15.39 inch) higher and has 300 liters (10.59 ft3) bigger cargo space than Seat Leon (2016).
Seat Leon (2016) is 1367 kg (3,014 lbs) lighter than Mercedes GL-Class (2017).