Hyundai Kona (2020) is 4 mm (0.16 inch) wider and 130 mm (5.12 inch) higher than Mazda 3 (Hatchback) (2017).
Mazda 3 (Hatchback) (2017) is 280 mm (11.02 inch) longer, 350 kg (772 lbs) lighter and has 32 liters (1.13 ft3) bigger cargo space than Hyundai Kona (2020).