Mercedes A-Class (2015) is 1597 mm (62.87 inch) longer, 117 mm (4.61 inch) wider and has 151 liters (5.33 ft3) bigger cargo space than Smart Fortwo (2016).
Smart Fortwo (2016) is 122 mm (4.80 inch) higher and 445 kg (981 lbs) lighter than Mercedes A-Class (2015).