Buick Regal (2016) is 239 mm (9.41 inch) longer, 87 mm (3.43 inch) wider, 53 mm (2.09 inch) higher and has 71 liters (2.51 ft3) bigger cargo space than Mercedes C-Class (Coupe) (2014).
Mercedes C-Class (Coupe) (2014) is 70 kg (154 lbs) lighter than Buick Regal (2016).