Audi S4 (2015) is 875 kg (1,929 lbs) lighter than Mercedes GL-Class (2014).
Mercedes GL-Class (2014) is 430 mm (16.93 inch) longer, 172 mm (6.77 inch) wider, 444 mm (17.48 inch) higher and has 200 liters (7.06 ft3) bigger cargo space than Audi S4 (2015).