Buick Regal TourX (2018) is 608 mm (23.94 inch) longer, 2 mm (0.08 inch) wider, 191 mm (7.52 inch) higher and has 415 liters (14.66 ft3) bigger cargo space than Toyota GR Supra (2019).
Toyota GR Supra (2019) is 53 kg (117 lbs) lighter than Buick Regal TourX (2018).