Buick Regal (2014) is 145 mm (5.71 inch) longer, 47 mm (1.85 inch) wider, 74 mm (2.91 inch) higher and has 46 liters (1.62 ft3) bigger cargo space than Mercedes C-Class (Coupe) (2017).
Mercedes C-Class (Coupe) (2017) is 115 kg (254 lbs) lighter than Buick Regal (2014).