The new Mercedes-Benz E-Class improves fuel efficiency by up to 23 per cent, delivering 53.3 mpg and 139 g/km CO2.
The nine available engines are direct-injection units, with the new four-cylinder diesel engine achieving 53.3 mpg. All the engines for the new E-Class meet the EU5 emission standard.
The BlueEFFICIENCY package for the E-Class (standard on all UK cars except the V8s) is largely responsible for an average fuel consumption improvement of 3 mpg. Fuel has been saved by means of reduced weight, a new shape, improved functioning or efficient energy management.
The work done in the wind tunnel has resulting in a drag coefficient of only 0.25, making the new E-Class the world’s most aerodynamically efficient luxury saloon.
Other BlueEFFICIENCY measures include newly developed tyres with up to 17 per cent lower rolling resistance, need-related and therefore energy-saving control of the alternator, fuel pump, air conditioning compressor and power steering, and the ECO start/stop function (from late summer 2009) which switches the engine of the new E 200 CGI off when idling. Displays in the speedometer inform the driver how much fuel is being consumed, and when they should shift to the next higher gear in the interests of an economical and environmentally conscious driving style.
With three completely newly developed four-cylinder engines, these engines feature latest-generation common-rail direct injection, fast piezo-electric injectors, improved exhaust gas recirculation and an innovative twin turbocharger, making for improved responsiveness and good performance characteristics.
The new four-cylinder diesel engine also powers the E 220 CDI with 170 hp and the E 200 CDI with 136 hp which also have combined fuel consumption figures of 53.3 mpg (available late summer 2009).
The top model in the new E-Class diesel range is the six-cylinder E 350 CDI with an output of 231 hp, which returns 40.9 mpg on the combined cycle, a 2 mpg improvement over the previous E 320 CDI.
Petrol engines also have a 20 per cent fuel saving thanks to direct injection.
The E 200 CGI and E 250 CGI are equipped with the newly developed four-cylinder direct-injection engine with a displacement of 1.8 litres, turbocharging and variable intake and exhaust camshafts. The E 200 CGI (184 hp) is equipped with a six-speed manual transmission and the ECO start/stop function as standard, and returns 41.5 mpg of petrol. This equates to 159 grams of CO2 per kilometre.
Mercedes-Benz says it has more than 20 new or further technical developments, including standard Attention Assist, optional Adaptive High Beam Assist and automatic emergency braking, which is activated when there is acute danger of a collision.
There is also intelligent bodyshell technology with up to 30 per cent greater rigidity, further improved seats and a newly developed suspension whose shock absorbers automatically adjust to the current driving situation. The optional airmatic suspension now works together with an electronic damping system.