Alfa Romeo 4C (2019) is 7 mm (0.28 inch) wider and 501 kg (1,105 lbs) lighter than Toyota GR Supra (2020).
Toyota GR Supra (2020) is 390 mm (15.35 inch) longer, 106 mm (4.17 inch) higher and has 75 liters (2.65 ft3) bigger cargo space than Alfa Romeo 4C (2019).