Mazda 6 Atenza (2018) is 52 mm (2.05 inch) higher, 852 kg (1,878 lbs) lighter and has 21 liters (0.74 ft3) bigger cargo space than Mercedes S-Class (2017).
Mercedes S-Class (2017) is 970 mm (38.19 inch) longer and 131 mm (5.16 inch) wider than Mazda 6 Atenza (2018).