Buick Regal TourX (2018) is 300 mm (11.81 inch) longer, 52 mm (2.05 inch) wider, 41 mm (1.61 inch) higher and has 110 liters (3.88 ft3) bigger cargo space than Mercedes C-Class (Estate) (2014).
Mercedes C-Class (Estate) (2014) is 187 kg (412 lbs) lighter than Buick Regal TourX (2018).