Hyundai i30 (2015) is 178 mm (7.01 inch) higher, 359 kg (791 lbs) lighter and has 193 liters (6.82 ft3) bigger cargo space than Toyota GR Supra (2019).
Toyota GR Supra (2019) is 78 mm (3.07 inch) longer and 80 mm (3.15 inch) wider than Hyundai i30 (2015).