Cadillac XTS (2014) is 368 mm (14.49 inch) longer, 783 kg (1,726 lbs) lighter and has 22 liters (0.78 ft3) bigger cargo space than Mercedes G-Class (2017).
Mercedes G-Class (2017) is 16 mm (0.63 inch) wider and 453 mm (17.83 inch) higher than Cadillac XTS (2014).