Audi A4 Allroad (2017) is 3 mm (0.12 inch) higher, 490 kg (1,080 lbs) lighter and has 5 liters (0.18 ft3) bigger cargo space than Mercedes S-Class (2015).
Mercedes S-Class (2015) is 495 mm (19.49 inch) longer and 57 mm (2.24 inch) wider than Audi A4 Allroad (2017).