Mazda 6 Atenza (2015) is 133 mm (5.24 inch) higher, 276 kg (608 lbs) lighter and has 151 liters (5.33 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 (2015).