Mazda 6 Atenza (2016) is 52 mm (2.05 inch) higher, 871 kg (1,920 lbs) lighter and has 21 liters (0.74 ft3) bigger cargo space than Mercedes S-Class (2020).
Mercedes S-Class (2020) is 970 mm (38.19 inch) longer and 131 mm (5.16 inch) wider than Mazda 6 Atenza (2016).