Cadillac CT6 (2016) is 526 mm (20.71 inch) longer, 446 kg (983 lbs) lighter and has 83 liters (2.93 ft3) bigger cargo space than Mercedes GLC-Class (2016).
Mercedes GLC-Class (2016) is 10 mm (0.39 inch) wider and 188 mm (7.40 inch) higher than Cadillac CT6 (2016).