Cadillac CTS-V (2017) is 641 mm (25.24 inch) longer, 161 mm (6.34 inch) higher and has 203 liters (7.17 ft3) bigger cargo space than Toyota GR Supra (2020).
Toyota GR Supra (2020) is 26 mm (1.02 inch) wider and 251 kg (553 lbs) lighter than Cadillac CTS-V (2017).