Energy efficiency: More efficiency – more fun at the wheel

A reduced-friction all-wheel-drive powertrain, the outstanding aerodynamics and the intelligent lightweight design are the primary reasons for the high energy efficiency of all the new GLC Coupés. Initially there are a total of seven engines to choose from, including the plug-in hybrid GLC 350 e 4MATIC Coupé model and the six-cylinder GLC 350 d 4MATIC Coupé diesel model.

The GLC 350 e 4MATIC Coupé boasts minimal fuel consumption and emissions while offering performance on a par with that of a sports car. Over and above this the hybrid coupé can drive up to 34 km purely electrically1 and thus emission-free, the top electric speed is 135 km/h. Like the plug-in SUV brother GLC, the coupé version comprises all the usual comfort and efficiency systems. The most important facilities at a glance:
1 according to NEDC

  • Silent start: the vehicle starts virtually silently and runs in electric mode. At this point the combustion engine is generally kept switched off.
  • Boosting: The electric motor kicks in to boost the output of the internal combustion engine by up to 85 kW, turning the GLC 350 e 4MATIC Coupé into a sports car. Acceleration from 0 to 100 km/h takes only 5.9 seconds. 
  • Energy recuperation: during braking and coasting, energy is recovered and stored in the battery. This energy can then be used at a later stage for electric driving or the boost function. 
  • Haptic accelerator pedal: Supports fuel-efficient driving. A resistance point indicates the maximum available electric output. A double impulse 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.
  • Intelligent HYBRID: Intelligent operating strategy for hybrid vehicles, anticipates the course of the road and the traffic situation for maximum efficiency. This includes radar-based recuperation, an anticipatory shifting and operating strategy, a route-based operating strategy and the ECO Assistant. 
  • Pre-entry climate control: The desired interior climate can be set before starting your journey – cooling in the summer, heating in the winter. This function can be activated via a pre-set departure time or via smartphone using the Mercedes me connect app. 
  • Retrieval of vehicle status: It is additionally possible to control the charging process or check the charge status and the current electric range via smartphone on Mercedes me connect.

The GLC 350 e 4MATIC Coupé offers four operating modes which are available in the DYNAMIC SELECT driving programs ECO and COMFORT:

  • Hybrid: All hybrid functions, such as electric mode, boost and recuperation are available and are deployed for optimum fuel efficiency.
  • 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. 
  • E-Save: the charge status of the battery is maintained – for example to allow all-electric driving in an environmental zone at a later stage in the journey.
  • Charge: Serves to charge the battery via the combustion engine while on the move, to enable all-electric driving in an environmental zone at a later stage in the journey, for example.

Diesel engine range with four and six cylinders

The offering includes the four-cylinder diesel models GLC 220 d 4MATIC Coupé and GLC 250 d 4MATIC Coupé with outputs ranging from 125 kW (170 hp) to 150 kW (204 hp). In the 190 kW (258 hp) GLC 350 d 4MATIC Coupé with its V6 diesel engine, impressive performance with moderate consumption values are ensured. It goes without saying that all diesel models boast the latest SCR exhaust gas aftertreatment with AdBlue® injection.

 The diesel models at a glance:

 

GLC 220 d 4MATIC

Coupé

GLC 250 d

4MATIC

Coupé

GLC 350 d

4MATIC

Coupé*

Output, kW/hp

125/170

150/204

190/258

Torque, Nm

400

500

620

Fuel consumption, l/100 km

5.0 - 5.4

5.0 - 5.4

from 6.0**

CO2 g/km

131 - 143

131 - 143

from 155**  

0-100 km/h s

8.3

7.6

6,2

Vmax km/h

210

222

238  

*available from December 2016; **preliminary values.

Fast faster: petrol variants up to 270 kW (367 hp)

Distinctive dynamism is promised by the petrol models GLC 250 4MATIC Coupé with 155 kW (211 hp) and the GLC 300 4MATIC Coupé with 180 kW (245 hp) available from the end of 2016. The particularly dynamic Mercedes-AMG GLC 43 4MATIC Coupé has even more performance up its sleeve (also from the end of 2016): this powerful top-of-the-line model comes with perfect on-road performance, individual and dynamic styling and an attractive equipment package. The V6 biturbo engine puts out 270 kW (367 hp), accelerating the coupé to 100 km/h in 4.9 seconds.

The petrol and plug-in variants at a glance:

 

GLC 250 4MATIC

Coupé

GLC 300 4MATIC

Coupé*

GLC 350 e

4MATIC

Coupé

Output, kW/hp

155/211

180/245

235/320**

Torque, Nm

350

370

560**

Fuel consumption, l/100 km

6.9-7.3

from 7.3***

2.5 - 2.7

CO2 g/km

159-170

from 165***

59 - 64

0-100 km/h s

7.3

6.5

5.9

Vmax km/h

222

236

235

*available from December 2016; **system output/torque; ***preliminary values

Intelligent lightweight design for slimline results

Another key factor behind the vehicle's economic efficiency is the weight-shedding programme that the GLC Coupé has undergone. The main contributory factor here is the totally new hybrid material body, which introduces innovative lightweight design into volume production. Through the intelligent material mix of aluminium, high- to maximum-strength steels and robust plastic the GLC Coupé's foundations are lighter – and this with best-in-class rigidity for outstanding handling, optimised quiet-running characteristics and vibration comfort plus further enhanced crash safety. 

The following aluminium components are used:

  • front wing, bonnet and roof panelling 
  • Front: front end (extruded aluminium section), crash boxes, frames for fitting headlamps, cooling system and bonnet closing system
  • shock absorber strut consoles (die-cast aluminium) to house the front struts 
  • rear area with shock absorber strut consoles, cross members and longitudinal members (die-cast aluminium) 
  • door hinges
  • 4x4 subframe for front axle and steering, rear axle carrier
  • Suspension: four-link front suspension with spring link, strut rod, upper wishbone and steering knuckle (forged aluminium), five-link rear axle and wheel carrier (forged aluminium). This lowers the weight of the rear axle by 5 kilograms, while also improving

Weight-shedding measures also apply to the air suspension elements of the AIR BODY CONTROL system, which consist of glass-fibre-reinforced plastic. The aluminium and plastic components of the chassis and suspension not only reduce the weight but also enhance ride comfort as a result of the attendant reduction in unsprung masses.

Other weight advantages result from the 4MATIC all-wheel-drive powertrain with the nine-speed automatic 9G-TRONIC featuring a magnesium housing. Weight savings of around 12 kilograms are attained here. Highly robust body components made of plastic are also used. The front major assemblies compartment partition is one such component.

Streamlined transition

The design has also bestowed superlative aerodynamics on the new GLC Coupé. With a cd value of 0.31 and a drag area of 2.53 m2, the coupé clearly leads its segment with cd x A = 0.79. Apart from the vehicle's aerodynamically efficient basic shape, this exceptional aerodynamic performance also results from a host of solutions relating to points of detail:

  • Cooling air controlled according to installed engine variant, with ring-type shutter
  • Improved sealing of the radiator section and flow properties to make efficient use of the available cooling air
  • Streamlined design of the front and rear aprons
  • Sealed headlamp surrounds
  • Three-dimensional front wheel spoilers with patented slotted wheel arch linings for optimised air flow around the wheels
  • Aeroacoustic and aerodynamic design of the A-pillar
  • Extended roof spoiler with optimised flow properties and joint seals 
  • Aerodynamically optimised underbody with extensive engine compartment and underbody panelling 
  • Aerodynamically optimised wheels and tyres

 

 

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