Buick Regal TourX (2019) is 300 mm (11.81 inch) longer, 52 mm (2.05 inch) wider, 74 mm (2.91 inch) higher and has 244 liters (8.62 ft3) bigger cargo space than Mercedes C-Class (Coupe) (2017).
Mercedes C-Class (Coupe) (2017) is 132 kg (291 lbs) lighter than Buick Regal TourX (2019).