Kia Rio (Hatchback) (2017) is 735 kg (1,620 lbs) lighter than Toyota Mirai (2020).
Toyota Mirai (2020) is 925 mm (36.42 inch) longer, 165 mm (6.50 inch) wider, 15 mm (0.59 inch) higher and has 77 liters (2.72 ft3) bigger cargo space than Kia Rio (Hatchback) (2017).