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March 04, 2010
The engineers’ remit was to optimise the environmentally friendly properties of the executive- and luxury-segment models from Mercedes-Benz, and the fruits of their labours speak volumes: consumption and emissions have been cut by around 16 percent (minus 0.9 litre and minus 25 grammes respectively) for the E 250 CDI and by 6 percent (minus 0.3 of a litre and minus 8 grammes) for the C 220 CDI. Both models are already known for being exceedingly economical and efficient. In the E 250 CDI the four-cylinder engine achieves 150 kW (204 hp) and develops a superb torque of 500 Nm. Drivers of the C 220 CDI have 125 kW (170 hp) and a maximum torque of 400 Nm at their disposal.
Dynamism and pulling power are set to remain firmly on the scene in future, since this major leap forward in terms of efficiency is thanks largely to the consistent advancement of the diesel engine and the drive system.
E 250 CDI
Further improvements to the four-cylinder diesel engine formed one of the focal points of the optimisation measures. The characteristic features of this powerplant include a lighter crankshaft (it now has only four balance weights as opposed to eight previously), optimised oil pressure regulation and belt drive plus an exhaust gas turbocharger with a self-regulating compressor. What’s more, both the C 200 CDI and the E 250 CDI have been given a special automatic start/stop system – in conjunction with an automatic transmission for the first time in the case of the E-Class.
The work that went into enhancing the
7-speed automatic transmission in the
The environmentally friendly Mercedes-Benz C 220 CDI and E 250 CDI models will be available this autumn, and further BlueEFFICIENCY models from Mercedes-Benz will follow suit. The range of particularly environmentally friendly and economical Mercedes-Benz vehicles already comprises 60 BlueEFFICIENCY models from the A-Class to the S-Class.
(March 3, 2010)