Citroen C6 (2014) is 241 mm (9.49 inch) longer and 652 kg (1,437 lbs) lighter than Mercedes G-Class (2018).
Mercedes G-Class (2018) is 72 mm (2.83 inch) wider, 506 mm (19.92 inch) higher and has 246 liters (8.69 ft3) bigger cargo space than Citroen C6 (2014).