Cadillac XTS (2017) is 475 mm (18.70 inch) longer, 283 kg (624 lbs) lighter and has 160 liters (5.65 ft3) bigger cargo space than Mercedes GLC-Class (2016).
Mercedes GLC-Class (2016) is 37 mm (1.46 inch) wider and 158 mm (6.22 inch) higher than Cadillac XTS (2017).