A newly developed four-cylinder petrol engine boasting the performance of a high-capacity six-cylinder engine yet with significantly reduced fuel consumption is set to celebrate its world premiere in the E‑Class Coupé and Cabriolet. The engine generates 220 kW/299 hp from a displacement of 1991 cc and in the E 350 Coupé achieves a fuel consumption (combined) of 6.7 l/100 km (combined CO2 emissions: 149 g/km), while in the E 350 Cabriolet its fuel consumption (combined) is 6.8 l/100 km (combined CO2 emissions: 154 g/km). Pioneering technologies such as the EQ-Boost starter-Generator, 48 volt on-board electrical system and a particulate filter for petrol engines contribute to enhanced environmental compatibility. The basic price for the new E 350 Coupé is 59,738 euros, and for the E 350 Cabriolet 65,212 euros (incl. VAT in each case). New highlights for individualisation are available with immediate effect: these include new paint finishes and trim parts, a Night package for the Cabriolet, plus ENERGIZING comfort control which can help to enhance the well-being and performance levels of the occupants. In addition, in future drivers will even be able to make use of specific office functions directly in the vehicle and also access important data if required – almost as if they were in their office.

With its new high-tech combustion engine in the E-Class Coupé and Cabriolet, Mercedes-Benz is systemically continuing its CASE strategy which through the areas of networking (Connected), autonomous driving (Autonomous), flexible use (Shared & Services) and electric powertrains (Electric) is designed to turn the car into a platform for future mobility concepts and a space that offers a digital experience (for more information see page 8). A key step in this is the introduction of a new four-cylinder petrol engine featuring a specific output in excess of 100 kW and an intelligent combination of state-of-the-art engine technology and partial electrification through 48 V technology. With an output of 220 kW/299 hp and maximum torque of 400 Nm, it is pushing forward into performance areas which were previously the reserve of our high-capacity, six-cylinder engines. At the same time, it consumes significantly less fuel than corresponding six-cylinder engines (for more technical details see page 6). The innovative 9-speed 9G-TRONIC automatic transmission supports both a dynamic and a fuel-saving driving style.

High performance with the characteristics of a hybrid

The engine's special features include twin-scroll turbochargers, belt-driven 48 V starter-alternator (EQ Boost) and electric 48 V water pump. In conjunction with the modern on-board 48 V technology, the starter-alternator enables outstanding efficiency by making hybrid functions available. In practical terms these are seen in such features as

- easy start, in which the engine starts and accelerates almost imperceptibly,
- boost – this function can support the combustion engine in the engine speed range up to 2500 rpm with additional output of up to 10 kW and 150 Nm of torque from the electric motor,
- recuperation of up to 12 kW when braking,
- operation within favourable engine characteristics,
- gliding with automatic engine switch-off when the driving conditions permit this.

Further new additions to the E-Class Coupé and Cabriolet range include the model E 220 d 4MATIC (fuel consumption (combined) for Coupé [figures for Cabriolet in square brackets]: 4.8 l/100 km [5.1 l/100 km]; combined CO2 emissions: 126 g/km [133 g/km]), plus the E 200 4MATIC (fuel consumption (combined) for Coupé [figures for Cabriolet in square brackets]: 7.0 l/100 km [7.3 l/100 km]; combined CO2 emissions: 158 g/km [164 g/km]).

The new models


Even more individual

In addition to the extended model range, the E-Class Coupé now also offers additional highlights for individualisation. New features include two paint finishes in rubellite red and diamond silver as well as light longitudinal-grain aluminium trim elements.
The E-Class Cabriolet can be given a particularly sporty touch with the optional new Night package. It comprises:

- front bumper or AMG front apron with trim element in high-gloss black,
- diamond radiator grille with integral Mercedes star and single louvre in high-gloss black,
- exterior mirror housings in high-gloss black,
- chrome trim element in the rear bumper in high-gloss black,
- depending on standard equipment, 18-inch 5-twin-spoke light-alloy wheels, painted in black with a high-sheen finish, or 19-inch 6-spoke light-alloy wheels, also painted in black with a high-sheen finish, with mixed-size tyres, or in conjunction with the AMG Line exterior, 19-inch AMG 5-twin-spoke light-alloy wheels, painted in high-gloss black with a high-sheen finish, with mixed-size tyres, optionally 20-inch AMG multi-spoke light-alloy wheels, painted in high-gloss black with a high-sheen finish.

Even when it comes to the vehicle key, both the Coupé and Cabriolet boast a focus on individualisation. As such there is a choice of high-gloss vehicle key in white or black with decorate frame in either high-gloss chrome or matt chrome (only for the white variants).

Also new is the Comfort Connectivity package. It provides users of Mercedes me with the advantages of special services in the areas of maintenance and convenience. Furthermore, it provides support with Accident Recovery and Breakdown Management. And with the Concierge Service there is always a personal assistant to hand.

SMS notification in the event of parking damage

The functions of the Anti-Theft Protection package have also been extended. While previously being able to sound an alarm in the event of unauthorised entry into the vehicle interior or a change in the vehicle position, now the sensors are also able to detect when another vehicle touches the vehicle, for example when manoeuvring. In such a case it notifies the driver or owner immediately about possible parking damage by sending an SMS message to a predefined mobile phone number.

On-board wellness and fitness programme

Like the S-Class, the Saloon, Estate, Coupé and Cabriolet models of the E-Class also provide ENERGIZING comfort control as an option. Developed by Mercedes-Benz, this optional extra links various comfort systems in the vehicle, including climate control, ambience lighting, massage and fragrancing functions, and allows customers to configure a specific wellness set-up to suit their mood or needs. This enhances physical comfort and performance on the road. ENERGIZING comfort can be experienced in all seats, depending on the equipment level.

Six perfectly coordinated programmes are available to choose from:

- Freshness
- Warmth
- Vitality
- Joy
- Comfort
- Training (three training modes – muscle relaxation, muscle activation and balance – each with several exercises)

The programmes all run for ten minutes. They are visualised on the media display with colour graphics, and backed by suitable music.

In-Car Office: the office goes mobile

With the "Office function in the car" service, the driver and front passenger of an E-Class can now use certain office functions directly in the vehicle and access important data – almost as if they were in their office. For example, the service uses the locations of calendar entries and automatically transfers these to the car's navigation system. The user can also dial into a telephone conference on the basis of a calendar entry. The system automatically detects the required PIN access code and simultaneously dials it.

The intelligence required for the service is stored directly in the infotainment system of the vehicle and in the backend. The vehicle just needs to be equipped with COMAND Online and have an active data connection.

Under the microscope

New M 264 four-cylinder petrol engine: sporty specific output

Mercedes-Benz is bringing to the road a new generation of combustion engines featuring pioneering technologies. These include a four-cylinder petrol engine boasting high efficiency which benefits environmentally friendly power delivery.

A key member of the comprehensively redeveloped engine family from Mercedes-Benz is the new four-cylinder petrol engine with a specific output in excess of 100 kW. It advances into output regions which were previously the reserve of our high-capacity six-cylinder engines. At the same time, it consumes significantly less fuel than a corresponding six-cylinder engine. The engine's special features include twin-scroll turbochargers, belt-driven 48 V starter-alternator (EQ Boost) and electric 48 V water pump.

Spontaneous output at any time

In the interests of high power output and a spontaneous engine response, Mercedes-Benz has opted for twin-scroll turbocharging. Unlike conventional systems, a twin-scroll turbocharger merges the exhaust gas ducts of cylinder pairs in the flow-optimised manifold. This turbocharging concept with systematic cylinder flow separation produces high torque in the low rpm range together with high specific output.
A further-improved intake manifold with extremely short air paths and an exceptionally compact compressor housing additionally ensure spontaneous engine response and a fast reaction to accelerator pedal movements. The twin-scroll turbocharger has an electric wastegate actuator, which allows fast changes of the charge-air pressure.

To reduce exhaust emissions, use is made of tried-and-tested piezo injectors with a good mixture preparation, a further-improved combustion chamber and a particulate filter for petrol engines. Further efficiency measures include intake CAMTRONIC and a friction loss reduction package.

Key technical data


48 V electrical system and starter-alternator enable hybrid functions

In the E-Class Coupé and Cabriolet, the new petrol engine is combined with a 48 V electrical system, which is used for the belt-driven starter-alternator (EQ Boost) and the electric water pump. The fundamental advantages of a 48 V on-board electrical system: it offers four times the power of a 12 V system at identical currents, but avoids the additional safety architecture of a high-voltage electrical system.
Furthermore, in conjunction with the belt-driven starter-alternator, the 48 V on-board electrical system enables the key hybrid functions of "recuperation", "boost" and "coasting" to be implemented for the first time without high-voltage components. As a result, significant fuel savings are made possible.

The belt-driven starter-alternator is coupled with the internal combustion engine in a manner similar to how the alternator is commonly connected. The system therefore uses existing generator mounting points and does not interfere with the design of the powertrain. In addition, such a starter concept is so durable that the engine can be switched off much more often and whenever it is not needed: whether during decelerating or coasting, i.e. when rolling to save fuel at higher speeds, as soon as drivers take their foot off the accelerator.

Apart from reduced fuel consumption and CO2 emissions, the 48 V on-board electrical system also brings about increased comfort. This comes as a result of the 48 V on-board electrical system being able to crank the internal combustion engine to idle speed very smoothly. This benefits NVH (noise, vibration, harshness) and the transition when the engine starts is even quieter: the engine restarts as if it had never been off.

The integration of a 48 V on-board electrical system also offers advantages for further functions in the vehicle in future. On account of the higher voltage, the same power requires only a quarter of the current of a conventional system. This means that the wiring may be thinner and thus lighter – which indirectly contributes to saving fuel. The 48 V on-board electrical system also paves the way for the further expansion of infotainment and assistance systems.


Credits: Mercedes-Benz / Daimler AG

Copyright © 2017, Mercedes-Benz-Blog. All rights reserved.

The biggest strategic engine initiative in the history of Mercedes-Benz will enter its decisive phase in 2017. Following the launch of the new four-cylinder diesel engine in spring 2016, next year will see the addition of no fewer than four more members to the all-new family of engines: six-cylinder in-line engines in both diesel and petrol versions, a new four-cylinder petrol engine and a new biturbo V8. At the same time, there will be world premieres for ground-breaking technologies, such as the Integrated Starter-Alternator (ISG), the 48 V electrical system and the electric auxiliary compressor (eZV). These new technologies are tuned to the vehicles on state-of-the-art test rigs at the equally new Powertrain Integration Centre (AIZ) in Sindelfingen.

"More powerful, more economical and cleaner - the new modular family of engines from Mercedes-Benz offers the right powertrain for every vehicle," says Prof. Dr Thomas Weber, 62, Member of the Daimler Board of Management with responsibility for Group Research at Daimler AG and Mercedes-Benz Cars Development. "The systematic optimisation of our high-tech engines plays a crucial role in the road map towards sustainable mobility. They also need to be designed with a view to all current and future requirements. A key success factor in this regard is the extensive electrification of the powertrain."

Systematic electrification: new six-cylinder in-line petrol engine M 256

The new six-cylinder in-line petrol engine M 256 represents an outstanding example of electrification, including a 48 V electrical system. New, intelligent turbocharging, e.g. with an electric auxiliary compressor (eZV), as well as an Integrated Starter-Alternator (ISG) provide the guarantee of excellent drivability with no turbo lag. The ISG is responsible for hybrid functions, such as boost or energy recovery, while allowing fuel savings that were previously reserved for high-voltage hybrid technology. The bottom line is that the new six-cylinder in-line engine offers the same performance as an eight-cylinder machine while being much more fuel-efficient. The new petrol engine (internal code: M 256) launches next year in the new S-Class.

Systematic electrification dispenses with the need for a belt drive for ancillary components at the front of the engine, which reduces its overall length. The narrow construction, together with the physical separation of intake/exhaust, creates space for near-engine exhaust aftertreatment. The 48 V electrical system serves not only high power consumers, such as the water pump and air-conditioning compressor, but also the Integrated Starter-Alternator (ISG), which also supplies energy to the battery by means of highly efficient energy recovery.

An additional bonus is the unsurpassed refinement of the six-cylinder in-line engine. Output and torque are similar to the current eight-cylinder engine, i.e. over 300 kW (408 hp) and more than 500 Nm. In comparison with the previous V6, the CO2 emissions from the engine have been reduced by around 15 percent.

At 500 cc, the new machine has the same displacement per cylinder as the premium diesel engine family unveiled last year as well as the family of four-cylinder petrol engines.

Most powerful passenger-car diesel engine in the history of Mercedes-Benz: six-cylinder OM 656

The new top-of-the-line engine in the premium diesel family is likewise a six-cylinder in-line machine. The characteristics of the OM 656 include the stepped-bowl combustion process, two-stage exhaust turbocharging and, for the first time, the use of CAMTRONIC variable valve timing. Its design features a combination of aluminium engine block and steel pistons as well as further-improved NANOSLIDE® coating of the cylinder walls. Although there is a significant increase in output compared with the previous OM 642 (over 230 kW/313 hp instead of 190 kW/258 hp), the new engine consumes more than seven percent less fuel.

Like the already unveiled four-cylinder OM654, the new six-cylinder diesel engine OM 656 is likewise designed to comply with future emissions legislation (RDE – Real Driving Emissions). All the components of relevance for efficient emissions reduction are installed directly on the engine. The integrated technology approach of new stepped-bowl combustion process, dynamic multi-way exhaust gas recirculation and near-engine exhaust aftertreatment, combined for the first time with variable valve timing, opens the way for further reductions in consumption together with extremely low emissions. Thanks to the near-engine insulated configuration, exhaust aftertreatment has a low heat loss and extremely favourable operating conditions. This is reinforced by the CAMTRONIC switchable exhaust camshaft, which supports the consumption-neutral heating of the exhaust system.

Number of cylinders to suit the requirements: new V8 biturbo petrol engine M 176

Dynamic power delivery combined with high efficiency: the new biturbo (internal code: M 176) is one of the most economical V8 petrol engines in the world. Its special features include cylinder shutoff at part load as well as the positioning of the turbochargers in the V between the cylinder banks. From its 3982 cc displacement, the new V8 biturbo produces over 350 kW (476 hp) with a maximum torque of around 700 Nm from 2000 rpm. The new engine will consume over 10 percent less fuel than its predecessor, which is rated at 335 kW (455 hp). The new V8 will launch with this technology next year in the new S-Class.

For lower fuel consumption, when operated at part load the new M 176 shuts off four cylinders simultaneously by means of CAMTRONIC valve timing. This reduces the pumping losses while improving the overall efficiency of the remaining four cylinders by shifting the operating point towards higher loads.

Sporty specific output: new four-cylinder petrol engine M 264

A two-litre four-cylinder engine with a specific output of around 100 kW: the new Toptype petrol engine from Mercedes-Benz (internal code: M 264) advances into output regions previously reserved for high-displacement six-cylinder machines. At the same time, it consumes significantly less fuel than a comparable six-cylinder engine. The engine's special features include twin-scroll turbochargers, belt-driven 48 V starter-alternator (BSA) and electric 48 V water pump.

The BSA is also responsible for fuel-saving hybrid functions:

- Easy start: virtually imperceptible starting and acceleration of the engine
- Boost in the engine-speed range up to 2500 rpm
- Energy recovery up to 12.5 kW
- Shifting of the load point: allows operation in a more favourable area of the engine map
- Coasting with engine off.

In the interests of high power output and a spontaneous engine response, Mercedes-Benz has opted for twin-scroll turbocharging. Unlike conventional systems, a twin-scroll turbocharger merges the exhaust gas ducts of cylinder pairs in the flow-optimised manifold. This turbocharging concept with systematic cylinder flow separation produces high torque in the low-rpm range together with high specific output. Further efficiency measures include intake CAMTRONIC and a friction loss reduction package.

Even cleaner: particulate filter for petrol engines as standard

Mercedes-Benz is the first manufacturer to opt for the large-scale use of particulate filters for petrol engines to further improve their environmental compatibility. After more than two years of positive experience in the field with the S 500, in 2017 further S-Class variants will be equipped with the new M 256 and M 176 petrol engines with this technology. The filter will then be gradually introduced in other new vehicle models, facelifted models and new engine generations, such as the M 264.

The particulate filter for petrol engines reduces the emissions of fine soot particles. How it works: the exhaust-gas stream is supplied to a particulate filter system. The filter has a honeycomb structure with alternately sealed inlet and outlet channels. This forces the exhaust gas to flow through a porous filter wall, which traps the soot. The filter can be continuously regenerated under corresponding driving conditions.

New Powertrain Integration Centre (AIZ): state-of-the-art test rigs

With its new Powertrain Integration Centre (AIZ), in summer 2016 Mercedes-Benz took into service one of the automotive industry's most advanced test facilities. A total of ten vehicle test rigs inside the all-new state-of-the-art building in Sindelfingen are used for such purposes as the fine tuning of engine and transmission – comfort, dynamics and agility are matched to each other. The highlights include test rigs with high-precision torque measurement directly at the wheels of the vehicle as well as a test rig with a climatic altitude chamber, which uses partial vacuum to simulate an altitude of up to 5000 metres at temperatures of down to -30°C, while the vehicle operates fully automatically on a chassis dynamometer.

The new building at the Sindelfingen Mercedes-Benz Technology Centre (MTC) houses ten vehicle test rigs for tuning vehicles and their powertrains. The new building used 16,800 m3 of concrete, equivalent to the capacity of five Olympic swimming pools. There were also 2500 tonnes of reinforcing steel. The designers of the AIZ attached great importance to energy recovery, with 98 percent of the electric braking energy produced on the test rigs being fed back into the power network. Also, the air conditioning of the test rigs is energy-neutral for two-thirds of the year, which means that no power is consumed from the joint network. With all ten test rigs in continuous operation, this would be the same as supplying around 7500 households with electricity.

Extension of the Mercedes-Benz Technology Centre

The new Powertrain Integration Centre is part of extensive additions and conversions to the Mercedes-Benz Technology Centre (MTC) in Sindelfingen. The new driving simulator, climatic wind tunnels and a high-tech aero-acoustic wind tunnel are already in operation. By 2018, there will also be a state-of-the-art technology centre for vehicle safety, an electronics testing centre and a computer centre. Housed on the upper floor of the AIZ, the computer centre will directly use the electricity generated downstairs on the test rigs in order to operate and cool the computers.

The MTC is home to the headquarters of the company's global Group Research and passenger car development, including design.








































Credits: Daimler AG

Copyright © 2016, Mercedes-Benz-Blog. All rights reserved.