Mazda 3 (Hatchback) (2014) is 46 mm (1.81 inch) higher, 250 kg (551 lbs) lighter and has 8 liters (0.28 ft3) bigger cargo space than Mercedes C-Class (Coupe) (2017).
Mercedes C-Class (Coupe) (2017) is 226 mm (8.90 inch) longer and 14 mm (0.55 inch) wider than Mazda 3 (Hatchback) (2014).