Mercedes GLA-Class (2014) is 1722 mm (67.80 inch) longer, 141 mm (5.55 inch) wider and has 231 liters (8.16 ft3) bigger cargo space than Smart Fortwo (2016).
Smart Fortwo (2016) is 61 mm (2.40 inch) higher and 445 kg (981 lbs) lighter than Mercedes GLA-Class (2014).