Audi A7 Sportback (2016) is 12 mm (0.47 inch) wider, 315 kg (694 lbs) lighter and has 35 liters (1.24 ft3) bigger cargo space than Mercedes S-Class (2015).
Mercedes S-Class (2015) is 271 mm (10.67 inch) longer and 70 mm (2.76 inch) higher than Audi A7 Sportback (2016).