Mercedes GL-Class (2017) is 778 mm (30.63 inch) longer, 199 mm (7.83 inch) wider, 390 mm (15.35 inch) higher and has 410 liters (14.48 ft3) bigger cargo space than Seat Leon (2020).
Seat Leon (2020) is 965 kg (2,127 lbs) lighter than Mercedes GL-Class (2017).