Cadillac XTS (2014) is 476 mm (18.74 inch) longer, 288 kg (635 lbs) lighter and has 159 liters (5.62 ft3) bigger cargo space than Mercedes GLC-Class (2020).
Mercedes GLC-Class (2020) is 39 mm (1.54 inch) wider and 158 mm (6.22 inch) higher than Cadillac XTS (2014).