Mazda 3 (Sedan) (2017) is 295 mm (11.61 inch) longer and 31 mm (1.22 inch) wider than Toyota Matrix (2016).
Toyota Matrix (2016) is 104 mm (4.09 inch) higher, 103 kg (227 lbs) lighter and has 11 liters (0.39 ft3) bigger cargo space than Mazda 3 (Sedan) (2017).