Cadillac CT6 (2020) is 834 mm (32.83 inch) longer and 94 mm (3.70 inch) wider than Mercedes B-Class (2014).
Mercedes B-Class (2014) is 84 mm (3.31 inch) higher, 499 kg (1,100 lbs) lighter and has 39 liters (1.38 ft3) bigger cargo space than Cadillac CT6 (2020).