Audi A8 (2018) is 408 mm (16.06 inch) longer, 78 mm (3.07 inch) wider, 578 kg (1,274 lbs) lighter and has 18 liters (0.64 ft3) bigger cargo space than Mercedes G-Class (2014).
Mercedes G-Class (2014) is 481 mm (18.94 inch) higher than Audi A8 (2018).