Mercedes C-Class (Coupe) (2017) is 30 mm (1.18 inch) longer, 550 kg (1,213 lbs) lighter and has 6 liters (0.21 ft3) bigger cargo space than Mercedes GLC-Class (2016).
Mercedes GLC-Class (2016) is 80 mm (3.15 inch) wider and 250 mm (9.84 inch) higher than Mercedes C-Class (Coupe) (2017).