Mercedes-Benz CLS Shooting: Powerful and efficient







Published by Gerald Ferreira Date: December 6, 2012
Categories: Mercedes-Benz, Mercedes-Benz CLS-Class

Powerful and efficient

Mercedes-Benz CLS

Common hallmarks of all three of the engines deployed in the Mercedes-Benz CLS Shooting Brake are superlative efficiency and the ultimate in driving enjoyment. The two petrol engines, the CLS 350 BlueEFFICIENCY Shooting Brake and the CLS 500 BlueEFFICIENCY Shooting Brake feature a 7-speed automatic transmission.

The CLS 63 AMG features the the AMG SPEEDSHIFT MCT 7-speed sports transmission. The CLS 500 and CLS 63 AMG Shooting Brake features ECO start/stop function as standard. Absolute peak performance is embodied by the CLS 63 AMG Shooting Brake.

Mercedes-Benz CLS 2013

The CLS 350 BlueEFFICIENCY with a power output of 225 kW and 370 Nm of torque, emits 188 CO2 g/km. The V8 biturbo engine of the CLS 500 BlueEFFICIENCY generates an output of 300 kW and 600 Nm of torque. The top model is the CLS 63 AMG, delivering up to 410 kW and 800 Nm of torque.

Petrol engine with direct injection: the most efficient form of direct injection

The six cylinder unit was the world's first petrol engine with piezo-electric direct injection and spray-guided combustion, and as such achieved a fuel saving of around ten percent compared with its predecessor with port injection. The current CLS features third-generation direct petrol injection. These direct injections have established the V-engines from Mercedes-Benz as worldwide benchmarks, both by virtue of their elegantly powerful thrust and in terms of fuel consumption. Key data for the CLS 350 BlueEFFICIENCY Shooting Brake: 225 kW, 370 Nm, 7.3 litres of fuel per 100 km, 169 g CO2 per km.

Mercedes-Benz CLS Shooting Brake

The CLS 350 BlueEFFICIENCY accelerates from zero to 100 km/h in 6.7 seconds and attains a top speed of 250 km/h.

Direct petrol injection with spray-guided combustion, which Mercedes-Benz was the first car manufacturer to introduce in series production, disposes of a system pressure of up to 200 bar as the third-generation direct injection system, with variable optimisation of the pressure level according to the engine's characteristic map. Piezo-electric injectors allow up to five injections per power stroke for the best possible mixture formation, while multi-spark ignition helps to ensure reliable combustion of the mixture. Key features of the V6 petrol engine with direct injection technology in the CLS 350 BlueEFFICIENCY Shooting Brake are:

  • 60° cylinder angle, no balancer shaft
  • Extended lean-burn operation, lean-burn system with load monitoring from pressure information, new combustion system operating modes
  • Multi-spark ignition
  • Resonance intake manifold
  • Latest generation of piezo injectors
  • Enhanced cooling circuit control and optimisation
  • Enhanced oil circuit control and optimisation
  • Increased output and torque

V8 biturbo: the ultimate in refined sportiness

While V6 is a naturally aspirated engine, the technically closely related V8 engine in the CLS 500 BlueEFFICIENCY features biturbo-charging. The V8 also disposes of direct injection, but it has been designed for countries in which sulphur-free fuel is not available and is thus operated in homogeneous mode throughout the entire performance map. With a cubic capacity of 4633 cc, the eight-cylinder engine delivers 300 kW of power and maximum torque of 600 Nm. This enables the CLS Shooting Brake to accelerate from 0 to 100 km/h in 5.3 seconds while maintaining exemplary fuel efficiency for its power category at 9.2 l/100 km, corresponding to CO2 emissions of (214 g/km).

CLS 63 AMG: delivering up to 410 kW

The AMG 5.5-litre V8 biturbo engine impresses with a combination of direct petrol injection with spray-guided combustion, piezo injectors, biturbocharging, air/water intercooling, generator management and ECO start/stop function.

The eight-cylinder engine is the embodiment of pure dynamism and high efficiency: offering power output and torque levels of 386 kW and 700 Nm respectively, the effortless superiority of the CLS 63 AMG Shooting Brake can be enjoyed by the driver over every single kilometre. In conjunction with the "Edition 1", these figures are pushed to 410 kW and 800 Nm. Both variants offer driving performance of the highest calibre: accelerating from zero to 100 km/h takes 4.4 and 4.3 seconds respectively, and the top speed is 250 km/h (electronically limited).

Overview of the engine programme for the CLS Shooting Brake (figures for CLS 63 AMG "Edition 1" in square brackets):

Model CLS 350 BE Shooting Brake CLS 500 BE Shooting Brake CLS 63 AMG Shooting Brake
Arrangement/
no. of cylinders
  V6 V8 V8
Displacement [cc] 3498 4633 5461
Rated output [kW] at [r/min] 225 6500 300 5000 386 [410] 5250 – 5750
Rated torque [Nm] at [r/min] 370
3500 - 5250
600
1600 - 4750
700 1750 – 5250 [800 at 2000 – 4500]
Fuel
consumption, combined
[l/100 km] 8.1 9.2 10.1
CO2 emissions, combined [g/km] 188 214 235
Acceleration
0-100 km/h
[s] 6.7 5.3 4.4 [4.3]
Top speed [km/h] 250 250 250 / * 300

*AMG Drivers package (Electronically limited)

Both the CLS 350 and CLS 500 Blue EFFICIENCY Shooting Brake come with the 7G-TRONIC PLUS automatic transmission as standard. The current generation of the torque converter provides an improved dynamic response, better durability and reduced noise and vibration levels thanks to a new hydraulic circuit, as well as enhanced dampers and torque converter housing. The extreme wheel-slip reduction of the torque converter housing, combined with larger mechanical damper de-coupling, helps to reduce consumption significantly. In addition, the gearshift program in ECO mode has been changed in favour of lower engine r/min at cruising speeds.

AMG SPEEDSHIFT MCT 7-speed sports transmission – individual and flexible

The CLS 63 AMG Shooting Brake is fitted with the AMG SPEEDSHIFT MCT 7-speed sports transmission. Equipped with four individual transmission modes as well as automatic double declutching and RACE START functions, its power delivery is characterised by responsiveness and maximum variability. In "Controlled Efficiency" (C) mode, the ECO start/stop function is always enabled and switches the eight-cylinder engine off when the vehicle is at a standstill. In "S" (Sport), "S+" (Sport plus) and "M" (Manual) transmission modes, the engine and transmission are significantly more responsive: short, precisely defined interruptions of ignition and injection result in faster gear changes under full load.