Mazda 6 Atenza (2018) is 133 mm (5.24 inch) higher, 257 kg (567 lbs) lighter and has 165 liters (5.83 ft3) bigger cargo space than Mercedes C-Class (Coupe) (2020).
Mercedes C-Class (Coupe) (2020) is 411 mm (16.18 inch) longer and 42 mm (1.65 inch) wider than Mazda 6 Atenza (2018).