Cadillac XTS (2015) is 368 mm (14.49 inch) longer, 778 kg (1,715 lbs) lighter and has 22 liters (0.78 ft3) bigger cargo space than Mercedes G-Class (2017).
Mercedes G-Class (2017) is 15 mm (0.59 inch) wider and 453 mm (17.83 inch) higher than Cadillac XTS (2015).