THE C-CLASS SPORTS COUPÉ
In addition to the new four-cylinder engines, from autumn this year the C-Class features a number of further new developments which likewise improve safety, comfort and dynamism even further.
Powerful bi-xenon headlamps developed by Mercedes-Benz make an important contribution to active safety and are now available as optional equipment for the C-Class Saloon, Estate and Sports Coupé. Bi-xenon means that a modern gas discharge lamp in each headlight caters for both dipped and high beam. While the full light output is available in the high beam setting, a baffle is placed between the lamp and the lens system to obscure part of the beam when switching to dipped beam. With a power consumption of only 35 watts, bi-xenon headlamps on dipped beam provide an 87 per cent higher light output than conventional H7 bulbs. This even increases to approx. 180 per cent for high beam.
Clear glass lenses and a special lens configuration for the indicators give additional enhancement to the headlamps. Dynamic headlamp range adjustment automatically adapts the angle of inclination of the headlamps to the current attitude of the vehicle body and is included in the bi-xenon equipment package along with a high-pressure headlamp cleaning system.
Always at a safe distance with DISTRONIC
The proximity control system DISTRONIC relieves the driver of effort and improves ride comfort on longer journeys. This innovative system from the top Mercedes-Benz models celebrated its premiere in the automotive medium class in autumn 2002, when it became optionally available in the C-Class Saloon and Estate for the first time.
The automatic proximity control system is based on the fastest and most powerful microprocessor currently in automotive use: in fractions of a second this so-called Digital Signal Processor (DSP) with a cycle rate of 40 Megahertz processes signals from a radar sensor in the radiator grille which monitors the traffic situation in front of the car up to a distance of 150 metres and detects vehicles ahead. These reflect the short-wave radar impulses (77 Gigahertz), the time taken by the signals being used to calculate the distance and the change in frequency (Doppler effect) to determine the relative speeds of the two vehicles.
If the gap between a C-Class equipped with DISTRONIC and a preceding vehicle is reduced, the system automatically closes the throttle or – if necessary – applies the brakes to maintain the set safety distance. Once the gap has increased again, the system accelerates the car to the previously set speed or distance. If the road ahead is clear DISTRONIC operates as a conventional cruise control system and maintains the programmed speed within a range from 19 to 112 mph. The set vehicle speed is shown in the central display of
the instrument cluster; the driver is also able to call up a screen on the central display which informs them about the nominal vs. actual distance from a vehicle travelling ahead.
DISTRONIC brakes the C-Class with a maximum deceleration of up to two metres per second squared, which corresponds to approx. one fifth of the maximum possible deceleration. If the microprocessor establishes that greater deceleration is necessary, the system informs the driver by means of a warning light in the instrument cluster and an acoustic signal. The driver must then apply the brakes.
DaimlerChrysler research findings show that DISTRONIC makes driving more comfortable, reduces stress and provides a completely new, relaxed driving experience. Once activated the system is already operational from 19 mph; even when DISTRONIC is switched off the system warns the driver if he is approaching a vehicle ahead too quickly or the safety distance is too small.
More torque for the C 270 CDI with a six-speed manual transmission
The automated manual transmission SEQUENTRONIC is now also optionally available for the models C 240 and C 270 CDI. The torque of the C 270 CDI also increases from 370 to
400 Nm at 1600 to 2800 rpm in models equipped with the six-speed manual transmission and SEQUENTRONIC. Modifications to the clutch make it possible to transfer this higher torque reliably.
Download Press Pack for more information