Mazda 3 (Hatchback) (2018) is 82 mm (3.23 inch) longer, 148 mm (5.83 inch) higher, 369 kg (814 lbs) lighter and has 179 liters (6.32 ft3) bigger cargo space than Toyota GR Supra (2020).
Toyota GR Supra (2020) is 64 mm (2.52 inch) wider than Mazda 3 (Hatchback) (2018).