Cadillac XTS (2014) is 106 mm (4.17 inch) longer, 87 mm (3.43 inch) higher, 138 kg (304 lbs) lighter and has 109 liters (3.85 ft3) bigger cargo space than Mercedes S-Class Coupe (2016).
Mercedes S-Class Coupe (2016) is 46 mm (1.81 inch) wider than Cadillac XTS (2014).