Cadillac CT6 (2019) is 808 mm (31.81 inch) longer, 84 mm (3.31 inch) wider and has 42 liters (1.48 ft3) bigger cargo space than Mercedes B-Class (2020).
Mercedes B-Class (2020) is 89 mm (3.50 inch) higher and 183 kg (403 lbs) lighter than Cadillac CT6 (2019).