Carbike360 comprehensive Land Rover Discovery S 3.0 Diesel and Mercedes-Benz AMG SL55 Roadster 4MATIC Plus comparison based on the price, specification, fuel efficiency, features and more. Land Rover Discovery S 3.0 Diesel comes with a price of ₹1.34 Cr and Mercedes-Benz AMG SL55 Roadster 4MATIC Plus is priced at ₹2.47 Cr. Land Rover Discovery S 3.0 Diesel equipped with 2997 cc, 6 Cylinders Inline, 4 Valves/Cylinder, DOHC engine whereas Mercedes-Benz AMG SL55 Roadster 4MATIC Plus has3982 cc, 8 Cylinders In V Shape, 4 Valves/Cylinder, DOHC