Kia Niro EV (2018) is 9 mm (0.35 inch) wider, 105 mm (4.13 inch) higher and has 160 liters (5.65 ft3) bigger cargo space than Mazda 3 (Hatchback) (2015).
Mazda 3 (Hatchback) (2015) is 85 mm (3.35 inch) longer and 444 kg (979 lbs) lighter than Kia Niro EV (2018).