Chevrolet Sonic (Sedan) (2014) is 61 mm (2.40 inch) higher, 42 kg (93 lbs) lighter and has 3 liters (0.11 ft3) bigger cargo space than Mazda 3 (Sedan) (2014).
Mazda 3 (Sedan) (2014) is 162 mm (6.38 inch) longer and 61 mm (2.40 inch) wider than Chevrolet Sonic (Sedan) (2014).