Cadillac CT6 (2017) is 765 mm (30.12 inch) longer, 84 mm (3.31 inch) wider and has 28 liters (0.99 ft3) bigger cargo space than Mercedes B-Class (2020).
Mercedes B-Class (2020) is 89 mm (3.50 inch) higher and 29 kg (64 lbs) lighter than Cadillac CT6 (2017).