Kia Rio (Sedan) (2015) is 15 mm (0.59 inch) higher, 167 kg (368 lbs) lighter and has 23 liters (0.81 ft3) bigger cargo space than Mazda 3 (Hatchback) (2019).
Mazda 3 (Hatchback) (2019) is 94 mm (3.70 inch) longer and 76 mm (2.99 inch) wider than Kia Rio (Sedan) (2015).