The Class C BlueEFFICIENCY are tuned variants of Class C to have a lower consumption compared to the versions of those derived.

These versions are made from Class C 180 and C 200 CDI. There is also a Class C BlueEFFICIENCY 350 CGI that does not have the engine in the current C 350, 272 hp, but a separate direct injection and 292 hp.

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