Buick Regal TourX (2019) is 356 mm (14.02 inch) longer, 84 mm (3.31 inch) wider, 45 mm (1.77 inch) higher and has 130 liters (4.59 ft3) bigger cargo space than Mercedes CLA-Class (2016).
Mercedes CLA-Class (2016) is 197 kg (434 lbs) lighter than Buick Regal TourX (2019).