More than ever before, new petrol engines and an optimised powertrain make the 2011 Mercedes-Benz E-Class the standard for efficiency in its segment. With a combined fuel consumption of only 6.8-7.0 litres and 8.9 litres * of premium petrol per 100 kilometres, the E 350 BlueEFFICIENCY and E 500 BlueEFFICIENCY excel as the most economical models in their respective performance classes. Following the introduction of the new BlueDIRECT V6 and V8 models, all petrol and diesel engines in the E-Class now feature direct injection. The reduction in fuel consumption by up to 20 percent is also due to the standard ECO start/stop function and the improved 7G-TRONIC PLUS automatic transmission, which is now also available for the four-cylinder variants**.
"E" for "Efficiency": this is the well-proven success formula with which the E-Class is again raising the bar, and showing how the intelligent interaction between technical innovations throughout the powertrain can reduce fuel consumption even further. For example, in the E 350 BlueEFFICIENCY a combination of third-generation BlueDIRECT injection, the new 7G-TRONIC PLUS automatic transmission and the standard ECO start/stop function has led to a decrease in consumption by 20 percent compared to the preceding model, although peak output has increased by 10 kW/14 hp to 225 kW (306 hp). This high-tech V6 petrol engine is happy with 6.8-7.0 litres of premium petrol per 100 kilometres in the NEDC (New European Driving Cycle), which corresponds to CO2 emissions of 159-164 g/km. The new E 350 BlueEFFICIENCY sprints from 0 to 100 km/h in 6.3 seconds. Top speed is 250 km/h (electronically limited).
A comparable leap in efficiency is achieved by the new E 500 BlueEFFICIENCY. Despite a significantly smaller displacement (4633 cc, previously 5461 cc), the biturbo eight-cylinder with BlueDIRECT technology has gained in both output (300 kW/408 hp, previously 285 kW/388 hp) and torque (600 Nm, previously 530 Nm). At the same time its fuel consumption has fallen by around 17 percent from 10.8 to 8.9 l/100 kilometres * (NEDC combined). This too is the top figure in this performance class – and is accompanied by superior performance: the new E 500 BlueEFFICIENCY sprints from 0 to 100 km/h in only 5.2 secon ds. Top speed is 250 km/h (electronically limited).
This leap in efficiency for the BlueDIRECT engines is assisted by the standard ECO start/stop function, which is now included ex factory in the four-cylinder petrol and diesel models as well. Thanks to direct-start technology, the Mercedes-Benz system for petrol engines operates both immediately and quietly.
The automatic transmission exclusively available for the E-Class in future is 7G-TRONIC PLUS **. This comprehensively improved 7-speed automatic transmission is standard equipment in the E 250 BlueEFFICIENCY, E 350 BlueEFFICIENCY and E 500 BlueEFFICIENCY. The features of this latest evolutionary stage include a new torque converter with reduced slip, an ECO shift programme with an improved ratio spread and an auxiliary oil pump to maintain the operating pressure during automatic stops. Low-friction components and low-viscosity fluid help to reduce the operating pressure.
Particularly in the four-cylinder variants of the E-Class, the ECO start/stop function and 7G-TRONIC PLUS make for a considerable increase in efficiency. The engine specialists have also optimised the oil pressure control and belt drive, and equipped the turbocharger with a self-regulating compressor.
Result: In the E 220 CDI BlueEFFICIENCY (125 kW/170 hp) and E 250 CDI BlueEFFICIENCY (150 kW/204 hp) the NEDC consumption CO2 emissions in combination with the 6-speed manual transmission are now only 5.0-5.3 l/100 km and 130-139 g/km. In the automatic version they have fallen by 16 percent to 4.9-5.3 l/100km and 129-138 g CO2/km*. This makes the E 250 CDI BlueEFFICIENCY the most efficient diesel model in its performance category in the luxury class. Both the 6-speed manual and 7G-TRONIC variants of the 100 kW (136 hp) E 200 CDI BlueEFFICIENCY entry-level diesel now have a combined NEDC fuel consumption of only 5.1-5.4 litres per 100 kilometres (134-141 g CO2/km).
Updating the powertrain has also led to more fuel efficiency in the four-cylinder petrol engines. The 135 kW (184 hp) E 200 BlueEFFICIENCY with 7G-TRONIC PLUS now has an NEDC consumption of only 6.5-6.9 litres of premium petrol per 100 kilometres (152-160 g CO2/km). The figures with the manual 6-speed transmission are 7.1-7.4 l/100 km (169-176 g CO2/km). Exclusively equipped with the 7G-TRONIC PLUS transmission, the E 250 BlueEFFICIENCY (150 kW/204 hp) has a 13 percent lower NEDC fuel consumption than before at 6.6-7.0 l/100 km. CO2 emissions have fallen to 154-162 g/km. This means that the E 250 BlueEFFICIENCY is likewise at the top of its class with respect to efficiency.
The E 200 NGT BlueEFFICIENCY with bivalent natural gas drive rounds off the comprehensive update to the engine range for the Mercedes-Benz E-Class. The 120 kW (163 hp) four-cylinder in the Saloon can be operated on both premium petrol and natural gas. In addition to the petrol tank, three natural gas tanks are safely accommodated in the only bivalent natural gas model in the luxury class – one behind the rear seat backrest and two under the boot floor.
They have a combined capacity of 121.5 litres of natural gas, corresponding to 19.5 kilograms. In natural gas operation, the combined NEDC consumption of the E 200 NGT BlueEFFICIENCY has fallen by 0.6 kilograms to 5.5 kilograms per 100 kilometres. This corresponds to CO2 emissions of 149 grams per kilometre. In petrol mode the combined consumption has been reduced to 8.1 l/100 km.