Cadillac CT6 (2018) is 305 mm (12.01 inch) longer, 26 mm (1.02 inch) wider, 30 mm (1.18 inch) higher and 217 kg (478 lbs) lighter than Mercedes E-Class (2014).
Mercedes E-Class (2014) has 107 liters (3.78 ft3) bigger cargo space than Cadillac CT6 (2018).