Environment - innovations for efficient mobility


Environmentally compatible concepts

BlueEFFICIENCY from Mercedes-Benz stands for pioneering efficiency technology as well as innovative packages of measures based on optimising fuel consumption and emission levels.

BlueEFFICIENCY measures

BlueEFFICIENCY measures are comprehensive vehicle optimisations that help to save fuel and ease the burden on the environment. In the C-Class Estate, too, the most efficient engines are combined with the best features available, to keep fuel consumption to a minimum.

These include:

ECO display[1]

The ECO display shows the driver an evaluation of his driving style in the speedometer field of the instrument cluster so that he can check how efficiently he is driving and make adjustments where required.

ECO start/stop function[2]

The ECO start/stop function reduces fuel consumption and emissions by switching off the engine automatically when the car comes to a stop (e.g. in traffic jams or at traffic lights). If a vehicle is equipped with the ECO start/stop function, a starter/generator is installed in place of the starter. Intelligent control electronics allow the starter/generator to supply the electrical energy for the vehicle’s electrical system and, in starter mode, the torque required to start the engine.

Potential savings: A shift recommendation display in the instrument cluster prompts the driver to perform an early upshift to save fuel.

Configuration options: the ECO start/stop function can be deactivated manually and is switched off automatically, for example, when the interior temperature falls below a specified value (networked with climate control system)

Intelligent energy management

Significant savings can also come from a series of small contributions. With the aim of making the C-Class Estate more fuel efficient, the Mercedes-Benz engineers examined all the main components with regard to their energy usage and found ways of getting them to work more economically.

Overview of efficient energy management measures:

  • On-demand control: the power steering pump works particularly efficiently
  • Efficient alternator management: the kinetic energy from braking and coasting is used to charge the battery
  • More efficient fuel management: the pumping pressure of the fuel pump of the diesel engines is based on the precise amount of fuel needed at the time
  • Air conditioning only as required: if not required, the compressor is automatically decoupled from the engine’s belt drive
Tyres with optimised rolling resistance

The rolling resistance of the tyres has a big influence on a vehicle’s consumption. For this reason, Mercedes-Benz deploys tyres with low rolling resistance in the C-Class Estate as well. They are formed in a different way and use a different rubber blend to conventional tyres. With unchanged handling and braking characteristics, the rolling resistance can be markedly reduced with them.

Ratio-optimised transmission

The optimised 7G-TRONIC PLUS 7-speed automatic transmission features an innovative torque converter with greater dynamic response and durability, a further reduced noise level and significantly lower fuel consumption . The latter is also as a result of the standard ECO start/stop function[2] together with a consistently adjusted engine speed level.

Efficiency technologies in the C-Class Estate

Direct injection, high-precision injectors, increased compression and turbocharging in the latest engine generation of petrol engines generate outstanding torque, and output at exceptionally low noise levels. Innovative engine technology has significantly reduced emissions and fuel consumption.

The C 220 CDI BlueEFFICIENCY Edition special model.

The C 220 CDI BlueEFFICIENCY Edition special model is the highlight in terms of fuel economy and ecological efficiency. Thanks to a comprehensive range of measures including rolling-resistance-optimised tyres, electromechanical steering and a wealth of further measures, it has been possible to reduce the CO2 emissions of this C-Class Estate to 114 g/km per kilometre.

(C 220 CDI BlueEFFICIENCY Edition: Fuel consumption combined: 4.3 l/100 km, CO2 emissions combined: 114 g/km)[3]

[1] Not available for the C 200 BlueEFFICIENCY, C 250 BlueEFFICIENCY, C 300 CDI 4MATIC BlueEFFICIENCY nor C 63 AMG.[2] Not available for the C 300 CDI 4MATIC BlueEFFICIENCY nor C 63 AMG.[3] The figures shown for fuel consumption and CO2 emissions were obtained in accordance with the prescribed measuring process (Regulation [EC] 715/2007 in its currently applicable version). The figures are not based on an individual vehicle and do not constitute part of the product offer; they are provided solely for purposes of comparison between different vehicle models