Automatically switching off the engine when stationary, for example in tailbacks or at traffic lights, lowers fuel consumption and emissions and saves fuel costs. The ECO start/stop function operates particularly effectively, quickly and quietly.

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.

a shift recommendation display - in vehicles with manual transmission - in the instrument cluster prompts the driver to perform early upshifts to save fuel. The ECO start/stop function can be deactivated manually by a switch and is automatically suspended under certain conditions, for example, when the interior temperature goes below the temperature set (linked to the climate control system).

Not available for the C 63 AMG.

The ECO display in the instrument cluster that is available for numerous models provides information on the efficiency of one's driving style, thereby motivating drivers to modify their driving style to reduce fuel consumption.

Not available for the C 200 and C 250.

Significant savings can also come from a series of small contributions. With the aim of making the C-Class Coupé 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:

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 Coupé 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.

The lower a vehicle’s wind resistance (Cd value), the better its energy efficiency can be. Using intelligent design strategies aiming for improved aerodynamics, the Mercedes-Benz engineers have achieved a Cd value of 0.26 for the C-Class Coupé. Amongst other measures, the shapes of the front and rear aprons and the spoiler lip on the upper boot lid were designed to be aerodynamically efficient; and the external mirrors were positioned with better aerodynamics in mind.

The optimised 7-speed 7G-TRONIC PLUS automatic transmission features an innovative torque converter which has more dynamic response, greater durability, a further reduced noise level and significantly less fuel consumption. The latter is also as a result of the standard-fit ECO start/stop function together with a systematically adjusted rpm level.

The C 220 CDI BlueEFFICIENCY Edition special model operates particularly efficient and eco-friendly. As the result of modifying numerous vehicle components the CO2 emissions drop to 109 grams per kilometre on average.

(C 220 CDI BlueEFFICIENCY Edition: fuel consumption combined: 4.1 l/100 km, CO2 emissions combined: 109 g/km)[2]