Mercedes C-Class (Coupe) (2014) is 858 mm (33.78 inch) longer, 86 mm (3.39 inch) wider, 41 mm (1.61 inch) higher and has 90 liters (3.18 ft3) bigger cargo space than MINI Roadster (2015).
MINI Roadster (2015) is 360 kg (794 lbs) lighter than Mercedes C-Class (Coupe) (2014).