Environment - innovations for efficient mobility

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Environmentally compatible concepts

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

BlueEFFICIENCY measures

The BlueEFFICIENCY measures are comprehensive vehicle optimisations which help save fuel and ease the burden on the environment. The new E-Class Cabriolet also features the most efficient engines, combined with optimum aerodynamics and energy management measures, to keep fuel consumption to a minimum.

ECO start/stop function
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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.

  • Savings potential: A shift recommendation displayed in the instrument cluster of manual transmission vehicles prompts the driver to perform an early upshift to save fuel.
  • Configuration options: The ECO start/stop function can be deactivated manually using a switch and is switched off automatically when the interior temperature falls below a set value (networked with climate control system), for example.
Intelligent energy management

Significant savings can also come from a series of small contributions. With the aim of making the E-Class Cabriolet 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 reduces impact energy absorption.
  • Efficient generator 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 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.

Efficiency technologies for the E-Class Cabriolet

The current generation of CDI diesel engines display compelling performance characteristics coupled with low consumption levels. Injection pressure has been increased to up to 2000 bar, smoothness of operation enhanced and noise levels optimised, while reduced compression makes for lower emission levels.

Direct injection, increased compression and turbocharging in the new petrol engines generate outstanding torque, output and noise reduction figures. Innovative engine technology has significantly reduced emissions and fuel consumption compared with previous models.