Kia Rio (Hatchback) (2017) is 15 mm (0.59 inch) higher and 244 kg (538 lbs) lighter than Mazda 3 (Hatchback) (2020).
Mazda 3 (Hatchback) (2020) is 410 mm (16.14 inch) longer, 75 mm (2.95 inch) wider and has 39 liters (1.38 ft3) bigger cargo space than Kia Rio (Hatchback) (2017).