BMW 3 Series Gran Turismo (2020) is 2129 mm (83.82 inch) longer, 165 mm (6.50 inch) wider and has 330 liters (11.65 ft3) bigger cargo space than Smart Fortwo (2016).
Smart Fortwo (2016) is 47 mm (1.85 inch) higher and 785 kg (1,731 lbs) lighter than BMW 3 Series Gran Turismo (2020).
