Mercedes-Benz C350 Plug-In Hybrid Estate #1
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Mercedes-Benz C350 Plug-In Hybrid Estate #2
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Mercedes-Benz C350 Plug-In Hybrid Estate #4
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Mercedes-Benz C350 Plug-In Hybrid Estate

Following its premiere in the S-Class, Mercedes-Benz is now offering its most advanced Hybrid technology yet in the C-Class and, for the first time, also in an Estate model. The dynamism and efficiency of the C350 Plug-In Hybrid make it a convincing proposition in both its Saloon and its Estate guise. With a range of 31 kilometres in purely electric mode, local emission-free driving is now a reality. Its four-cylinder petrol engine, in conjunction with a powerful electric motor, gives it a total system output of 205 kW (279 hp) and torque of 600 Nm. The new C350 Plug-In Hybrid thus delivers the performance of a sports car and yet offers certified consumption figures of just 2.1 litres of fuel per 100 kilometres both as a Saloon and as an Estate. This corresponds to CO2 emissions of 48 grams (49 grams for the Estate) per kilometre. Both models are also equipped as standard with AIRMATIC air suspension plus a Pre-Entry Climate Control system that can be controlled via the internet, adding up to a truly exceptional level of driving and climate comfort. The C350 Plug-In Hybrid will be at dealerships from March 2015.

Prof Dr Thomas Weber, Member of the Board of Management of Daimler AG and responsible for Group Research and Mercedes-Benz Cars Development: "The Plug-In Hybrid is an investment in the future of Mercedes-Benz and we believe it will become established as the successful technology for maximum efficiency coupled with powerful dynamic performance. We will be launching ten new Plug-In Hybrid models up to 2017".

Following the C300 BlueTEC Hybrid, the C350 Plug-In Hybrid is the second Hybrid model in the new C-Class and the second Mercedes-Benz model to feature Plug-In Hybrid technology. Thanks to the combination of combustion engine and electric drive, Hybrid drive systems deliver impressively low consumption, but with high performance. The electric motor is able to replace or support the combustion engine in situations where the combustion engine does not perform quite so well, and makes practical use of energy generated while braking by converting it into electric energy and storing it.

The C350 Plug-In Hybrid uses the currently most advanced form of Hybrid technology. Its electrical energy storage unit is a high-voltage lithium-ion battery with a total capacity of 6.2 kWh, which can be charged from an external power source and so makes an effective contribution to the low consumption and emission figures. The battery is water-cooled, weighs around 100 kilograms and is mounted in a sheet steel housing underneath the rear axle in order to maximise crash safety, driving dynamics and boot space.

Thanks to an intelligent on-board charging system, the battery can be recharged in around 1 hour 45 minutes at a wallbox or at one of the growing number of public charging points (230 V, 16 A, 3.7 kW single-phase), which in some cases offer privileged parking. Alternatively, charging via a standard domestic socket is of course also possible. Depending on the connection, a charge time of around two hours is achievable (with 230 V and 13 A, 3.0 kW).

Despite the space taken up by the battery, the C350 Plug-In Hybrid still has a boot capacity of 335 litres in its Saloon format and of 350 in the Estate model, or in the latter case of 1370 litres with the rear-seat backrests folded down and, as ever, a level load compartment floor.

Plug-In Hybrid for the first time now with four-cylinder petrol engine

In the new Mercedes-Benz C350 Plug-In Hybrid, this Hybrid drive concept is combined for the first time with an efficient four-cylinder petrol engine. From a displacement of just under two litres, it produces 155 kW (211 hp) and maximum torque of 350 newton metres. Its direct injection system with spray-guided combustion uses electronically precise controlled multiple injection and fast multi-spark ignition to deliver outstanding performance coupled with high efficiency and exemplary emissions. The electric motor of the C350 Plug-In Hybrid has an output of up to 60 kW and delivers torque of 340 newton metres. A total system output of 205 kW (279 hp), as well as torque of 600 newton metres, are thus available to be called upon.

7-speed automatic with additional clutch

The Hybrid module of the standard 7-speed automatic transmission 7G-TRONIC PLUS incorporates both the electric motor and an additional clutch between the combustion engine and the electric motor. When driving in all-electric mode, this decouples the combustion engine from the drive train. It also, however, offers the possibility of moving off using the combustion engine but with the performance of a wet start-up clutch. The clutch here is a substitute for the torque converter.

The performance of a sports car

The high overall system output and intelligent engine management give the car the dynamic performance of a nimble sports car. And it combines this with the ride comfort of a premium saloon, along with fuel consumption and environmental compatibility at a level that, until not all that long ago, would not even have been expected of many small cars. The Saloon can sprint from zero to 100 km/h in 5.9 seconds, while the Estate, at 6.2 seconds, is almost as quick off the mark. The Saloon can reach a top speed of 250 km/h and the Estate up to 246 km/h, both in conjunction with certified fuel consumption of 2.1 litres per 100 kilometres. This corresponds to CO2 emissions of 48 grams per kilometre (49 grams per kilometre for the Estate). Both variants of the C350 Plug-In Hybrid also offer the possibility of driving up to 31 kilometres in all-electric mode, and thus completely free of CO2 emissions locally - for example in the city.

A Hybrid is efficient, dynamic and completely straightforward to drive

Driving with the new C350 Plug-In Hybrid is just as easy as with any other automatic vehicle from Mercedes-Benz: simply climb in, start the engine and off you go. As you do so, enjoy its exemplary efficiency and, if you so wish, kick down to experience the superb acceleration of the electric motor.

The C350 Plug-In Hybrid offers all the characteristics of a state-of-the-art Hybrid vehicle. These include first and foremost:

Silent start: the vehicle starts virtually silently and runs in electric mode. At this point the combustion engine is generally held inactive. Electric output of up to 60 kW is available for driving in all-electric mode.

The greatest potential for lowering the energy consumption of Hybrid drive systems lies in maximising energy recovery during coasting and braking. When the brake pedal is depressed, the electric motor therefore initially takes on the task of decelerating, acting here as an alternator. If firmer braking is required, the disk brakes will then intervene mechanically to provide additional grip. This overlap between conventional mechanical braking and the electric braking performance of the electric motor in alternator mode increases effectiveness but remains imperceptible.

Furthermore, the intelligent engine management system of the C350 Plug-In Hybrid works in the background to select the ideal combination between combustion engine and electric motor.

Impulses for the driver

One new feature of the C350 Plug-In Hybrid is the so-called haptic accelerator pedal, which helps to reduce fuel consumption and thus also exhaust emissions. It provides two types of information:

+ If, when driving in electric mode, the driver's foot meets a point of resistance on the accelerator pedal, this is an indication that maximum electric performance is being delivered. If the driver continues to depress the accelerator beyond this resistance point, the combustion engine will kick in.

+ A double impulse from the ECO Assist function signals that the driver should remove their foot from the accelerator pedal in order to switch off the combustion engine and decouple it from the drive train. Assuming that the driver does what the double impulse suggests, the intelligent engine management system of the C350 Plug-In Hybrid will vary the deceleration mode between unpowered (sailing) and recuperation, using data from the car's radar systems as its basis.

Individual transmission mode

The complex technology of the C350 Plug-In Hybrid makes it no more difficult to drive than a conventional vehicle with automatic transmission. But anyone wanting to can also intervene manually and regulate the Hybrid interplay themselves, with the help of five operating modes and three transmission modes. This is done via an operating mode switch and a transmission mode switch located in the centre console. A display in the middle of the instrument cluster shows the current setting.

Selecting a specific transmission mode enables the driver to define certain functions that influence the driving experience.

The following transmission modes are available:

I Individual: individual definition of the characteristics of the transmission mode, including:

Choice of four operating modes

In addition to selecting a transmission programme, the driver of the C350 Plug-In Hybrid can also use the operating mode switch to influence the regulation between electric mode and the use of the combustion engine for driving. In the Eco and Comfort transmission modes, the following operating modes are available:

Hybrid: all Hybrid functions such as electric operating mode, boost and recuperation are available and are applied according to the driving situation and route in the most fuel-efficient manner.

E-mode: used for all-electric driving - for example in inner-city areas or because the battery holds sufficient charge for the remainder of the journey.

Route-based operating strategy

The best strategy for efficient operation is anticipatory driving. If the exact destination is known because the relevant data has been entered into the navigation system, charge and discharge of the C350 Plug-In Hybrid's high-voltage battery are controlled to ensure the optimal use of energy over the whole route.

Another key point is the requirement that urban areas should be reached with a fully charged battery if possible, so that the vehicle can be driven efficiently in stop-and-go traffic - and frequently in electric mode.

Air suspension and Pre-Entry Climate Control as standard

The new C350 Plug-In Hybrid offers the familiar range of equipment and appointment options that are available for the C-Class and, in addition, includes the enhanced comfort feature AIRMATIC air suspension as part of its standard specification, along with a further comprehensive range of pre-entry climate control options.

Thanks to its electronically regulated continuously variable damper adjustment at both front and rear axle, the air suspension offers outstanding ride comfort with minimal road roar and tyre vibration even when the vehicle is loaded, as well as self-levelling suspension all round.

Pre-Entry Climate Control, a further standard feature, makes it possible to set the desired temperature for the interior of the vehicle before setting off - cooling it in the summer, warming it up in the winter. This can be activated by pre-setting the departure time (can be set in the vehicle or from home via the internet at http://connect.mercedes.me) or directly by pressing a button. This is possible due to the electrically powered refrigerant compressor and electric heating elements for the warm air circulation. In vehicles with the appropriate specification, the seat ventilation or heating will also be activated.

As well as the Pre-Entry Climate Control function, the charging of the vehicle can also be controlled via http://connect.mercedes.me. It is also possible to check the charge status of the high-voltage battery or the vehicle's potential range in electric mode.

Two different faces for the Plug-In Hybrid as well

The C350 Plug-In Hybrid is supplied in the AVANTGARDE exterior equipment line, which emphasises its sporty, premium-vehicle character. As an alternative and at no extra cost, both Saloon and Estate versions are also available in the EXCLUSIVE exterior equipment line. With its classic radiator grille and the three-pointed star on the bonnet, the C-Class conveys prestige status and a sense of modern luxury.

The Mercedes-Benz designers have styled the interior at a level which is rarely encountered even in higher vehicle categories. This is evident from the carefully chosen high-class materials and their pleasant touch and feel as well as from the precision of the finely crafted details. Prominently located immediately above the centre console is a centrally positioned free-standing central display unit. All the functions of the head unit can be intuitively controlled from a touchpad using simple finger movements. Also available: a head-up display that projects important information onto the windscreen directly in the driver's field of vision.

The C350 Plug-In Hybrid is fitted as standard with H7 halogen headlamps. In addition to the standard-fit headlamps, two energy-saving LED variants are available: a static system and a dynamic version with the "LED Intelligent Light System".

Assistance systems for added safety and comfort

Both the Saloon and the Estate variants of the C350 Plug-In Hybrid offer the same extensive range of safety and assistance systems as all other C-Class models. Two of the systems fitted as standard are ATTENTION ASSIST, which can warn of inattentiveness and fatigue, and COLLISION PREVENTION ASSIST PLUS, which protects against collision at speeds of over 7 km/h and, if the danger remains and the driver fails to react, can also undertake autonomous braking at speeds of up to 200 km/h and by so doing reduce the severity of an accident involving a slower-moving vehicle. Further systems from the new S and E-Class, either new or with significantly enhanced functions, are also available as options.

Vibrant infotainment experience

Even the basic version of the sophisticated multimedia system found in the C‑Class is internet compatible, if paired with a Bluetooth®-enabled mobile phone with data option. This enables the internet to be surfed without restrictions when the vehicle is stationary. Also standard is a basic telephony feature, which connects the mobile phone with the vehicle via a standardised Bluetooth® interface.

Extensive know-how in the field of Hybrid and electric vehicles

In 1982, at the same time as it was launching the Mercedes-Benz 190, the predecessor to the C-Class, Mercedes-Benz also presented the first concept vehicle with Hybrid drive - a two-cylinder horizontally opposed engine served to charge the battery. A number of other experimental vehicles followed until in 2009 the world's first standard-specification Hybrid drive with lithium-ion battery made its debut at Mercedes-Benz: for a long time this S400 Hybrid was the most fuel-efficient petrol-powered luxury saloon and the most successful Hybrid in its segment.

The second-generation Hybrid transmission evolved on the basis of the 7G‑TRONIC PLUS automatic transmission. It premiered in 2012 in the E300 BlueTEC Hybrid, the first diesel Hybrid in the premium segment worldwide. By combining the efficiency of a diesel engine with the advantages of the Hybrid drive, Mercedes-Benz set another milestone in the development of the automobile and advanced into consumption regions of 4 litres of diesel per 100 km in the luxury saloon segment.

After the E300 BlueTEC Hybrid, S400 Hybrid, S300 BlueTEC Hybrid, C300 BlueTEC Hybrid and S500 Plug-In Hybrid, the C350 Plug-In Hybrid is the latest Hybrid model to come from Mercedes Benz. In the years to come the main emphasis will be on Plug-In Hybrids. The company is also a leading player in the field of purely electric mobility.

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