Cadillac CT6 (2016) is 303 mm (11.93 inch) longer, 26 mm (1.02 inch) wider, 28 mm (1.10 inch) higher and 226 kg (498 lbs) lighter than Mercedes E-Class (2014).
Mercedes E-Class (2014) has 107 liters (3.78 ft3) bigger cargo space than Cadillac CT6 (2016).