Mercedes B-Class (2017) is 1698 mm (66.85 inch) longer, 123 mm (4.84 inch) wider, 2 mm (0.08 inch) higher and has 296 liters (10.45 ft3) bigger cargo space than Smart Fortwo (2018).
Smart Fortwo (2018) is 445 kg (981 lbs) lighter than Mercedes B-Class (2017).
