Audi R8 Spyder (2020) is 81 mm (3.19 inch) wider and 27 kg (60 lbs) lighter than Buick Regal TourX (2019).
Buick Regal TourX (2019) is 560 mm (22.05 inch) longer, 243 mm (9.57 inch) higher and has 374 liters (13.21 ft3) bigger cargo space than Audi R8 Spyder (2020).