Cadillac CT6-V (2020) is 834 mm (32.83 inch) longer and 94 mm (3.70 inch) wider than Mercedes B-Class (2018).
Mercedes B-Class (2018) is 84 mm (3.31 inch) higher, 633 kg (1,396 lbs) lighter and has 39 liters (1.38 ft3) bigger cargo space than Cadillac CT6-V (2020).