Chevrolet Sonic (Sedan) (2018) is 66 mm (2.60 inch) higher and 261 kg (575 lbs) lighter than Mazda 6 (2018).
Mazda 6 (2018) is 478 mm (18.82 inch) longer, 104 mm (4.09 inch) wider and has 58 liters (2.05 ft3) bigger cargo space than Chevrolet Sonic (Sedan) (2018).