2011 Mercedes-Benz CLS prototype spied winter testing

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Another cold day in Sweden brings us a new set of next-generation CLS prototype pictures. Last time we only got a good look at the rear, this time we can show you all sides of the future CLS.

Speculations are that the new CLS will be based on S-Class or stretched E-Class platform. Either way it will be positioned below S-Class.

Compared to the current CLS the rear window looks bigger and the car seems to be sitting lower. New CLS will keep current models coupe style and will go against Porsche Panamera, Audi A7 and Aston Martin Rapide.

Engine options will likely include the new S400 BlueHybrid and V6 and V8 powerplants. Top of the line model will get the usual AMG treat.