Buick Regal TourX (2019) is 296 mm (11.65 inch) longer, 113 mm (4.45 inch) higher, 43 kg (95 lbs) lighter and has 285 liters (10.06 ft3) bigger cargo space than Nissan GT-R (2020).
Nissan GT-R (2020) is 33 mm (1.30 inch) wider than Buick Regal TourX (2019).