Cadillac XTS (2017) is 11 mm (0.43 inch) higher, 328 kg (723 lbs) lighter and has 10 liters (0.35 ft3) bigger cargo space than Mercedes S-Class (2017).
Mercedes S-Class (2017) is 114 mm (4.49 inch) longer and 46 mm (1.81 inch) wider than Cadillac XTS (2017).