Carbike360 comprehensive Audi RS5 Sportback and Mercedes-Benz S-Class S 350d comparison based on the price, specification, fuel efficiency, features and more. Audi RS5 Sportback comes with a price of ₹1.13 Cr and Mercedes-Benz S-Class S 350d is priced at ₹1.79 Cr. Audi RS5 Sportback equipped with 2894 cc, 6 Cylinders In V Shape, 4 Valves/Cylinder, DOHC engine whereas Mercedes-Benz S-Class S 350d has2925 cc, 6 Cylinders Inline, 4 Valves/Cylinder, DOHC