BMW 3 Series Gran Turismo (2014) is 407 mm (16.02 inch) longer, 93 mm (3.66 inch) wider and has 98 liters (3.46 ft3) bigger cargo space than Chevrolet Sonic (Sedan) (2018).
Chevrolet Sonic (Sedan) (2018) is 8 mm (0.31 inch) higher and 439 kg (968 lbs) lighter than BMW 3 Series Gran Turismo (2014).