Audi A4 (2015) is 13 mm (0.51 inch) higher, 555 kg (1,224 lbs) lighter and has 80 liters (2.83 ft3) bigger cargo space than Mercedes S-Class Coupe (2016).
Mercedes S-Class Coupe (2016) is 300 mm (11.81 inch) longer and 55 mm (2.17 inch) wider than Audi A4 (2015).