Mazda CX-30 (2020) is 17 mm (0.67 inch) longer, 248 mm (9.76 inch) higher, 249 kg (549 lbs) lighter and has 690 liters (24.37 ft3) bigger cargo space than Toyota GR Supra (2020).
Toyota GR Supra (2020) is 65 mm (2.56 inch) wider than Mazda CX-30 (2020).