2004 Mercedes-Benz SLK 55 AMG
Design: sports dynamics with designer features from Formula motor racing
From an initial glance, the design of
this car reflects the sporty and altogether more powerful character of
the new SLK-class. A long bonnet, steeply raked windscreen, wide doors
and short boot are the typical characteristics of a roadster and the new
SLK underlines these even more emphatically than its predecessor. The
extra 30 millimetres on the wheelbase, the distinctive arrow-like
tapering at the front and rear and the wedge-shaped silhouette all
contribute to this impression.
With attractive geometry details like the strikingly sharp nose section,
special fins on the radiator grille and the twin exhaust system
reminiscent of a racing car, the design of the new SLK recalls the fact
that this two-seater is the child of a company with a long and
illustrious tradition of sports car production.
The interior has also been completely redesigned and substantially
upgraded with a careful choice of materials. The design concept is
characterised by switches, push-buttons and decorative elements with
silver-coloured surfaces, creating a sharp contrast with the black
surfaces of the instrument panel. Customers who opt for a leather
interior can select from a range of six colours to create their personal
choice of interior look.
Body: best in its class for aerodynamics and luggage compartment volume
The beautifully shaped body of the new
SLK also stands out for its technical merits: no other roadster in this
class matches its superb Cd value (0.32), its exceptional standards of
body strength, an equivalent fuel tank capacity (70 litres) or a
comparable size of luggage compartment (300 litres when vario-roof is
closed).
The innovative vario-roof with which the Mercedes sports car set new
trends back in 1996 has been further improved by the engineers at the
Sindelfingen plant and its technology has been honed. It opens and
closes faster than ever before and thanks to a pivoting rear window it
now takes up even less space in the luggage compartment. When the vario-roof
is open, the luggage compartment capacity is 208 litres (applying the
VDA measurement method) – this is 63 litres more than that of the
predecessor model. For the first time ever, as an optional feature
available on request, the vario-roof can also be actuated using the
remote control on the vehicle key.
Safety: newly developed protection system with adaptive airbags
An ultramodern design procedure, a 40 %
increase in the use of high-tensile steel alloys and many other
additional measures allow the new SLK-class to surpass the high safety
standards set by its predecessor. The occupant protection systems
respond to the prevailing situation: for the first time, Mercedes-Benz
is using adaptive airbags in this model range, which deploy in two
stages depending on the severity of the accident.
The belt force limiters, now standard equipment, also function in two
stages and adjust to the severity of the accident. In instances of side
impact, recently developed head-thorax airbags spring into action and
protect the passenger’s head and upper body. A special sensor also
triggers the side airbags and both belt tensioners in the event of the
vehicle rolling over. Robust steel tubes in the A-pillars and solid
roll-over bars behind the seats offer additional protection in accidents
of this kind.
Engines: Up to 25 more performance with reduced fuel consumption
The range of engines available with the
new SLK-class is also unique for this market sector. Mercedes-Benz is
the first carmaker in this segment to respond with an eight-cylinder
engine to the wishes of performance-minded car drivers. The new SLK 55
AMG now sets a new benchmark in terms of power (265 kW/360 hp), torque
(510 newton metres) and acceleration (0-100 km/h: 4.9 seconds). The V8
power unit is twinned as standard with the recently developed 7G-TRONIC
seven-speed automatic transmission controlled by the driver using
gearshift buttons on the steering wheel.
Mercedes-Benz has developed a new six-cylinder engine with around 25
percent more power (200 kW/272 hp) and 13 percent more torque (350
newton metres) for the SLK 350. The four-valve engine is one of the most
powerful V6 units in its displacement class and its sporting character
can be clearly distinguished by its powerful, vibrant engine note.
Maximum torque is available from an engine speed of just 2400 rpm and
remains constant across a wide rev band extending up to 5000 rpm. This
allows the car to be accelerated hard and permits rapid bursts of power.
From a standing start, the SLK 350 reaches 100 km/h in just 5.6 seconds
(with the 7G-TRONIC: 5.5 seconds) and accelerates from 60 to 120 km/h in
8.7 seconds (with the 7G-TRONIC: 5.1 seconds).
This is the first time that Mercedes-Benz has ever produced a V6 engine
with variable camshaft control on intake and exhaust sides. The outcome
is enhanced performance and torque combined with improved fuel economy.
A two-stage intake manifold, “tumble” flaps in the intake ducts and an
intelligent heat management system add to the technical distinguishing
features of this new six-cylinder engine. When combined with the option
of a seven-speed automatic transmission, the new SLK 350 only consumes a
meagre 9.9 litres of Super grade fuel over a distance of 100 kilometres
(NEDC total consumption figures) and therefore, despite a significant
increase in performance figures, still manages to be some five percent
more fuel-efficient than the previous SLK six-cylinder engine with a
five-speed automatic transmission.
The 120 kW/163 hp engine in the SLK 200 KOMPREssOR is also celebrating a
premiere status in this range of Mercedes models. This is one of the new
generation of four-cylinder engines from Mercedes-Benz featuring the
unique TWINPULSE system which offers further advances in terms of
performance, torque, smoothness and fuel economy. The TWINPULSE system
combines a range of different technologies such as a compressor,
balancer shafts, charge-air cooling, variable camshaft adjustment and
four-valve technology. This high-tech package makes the new SLK 200
KOMPREssOR eight percent more fuel-efficient than its equally powerful
predecessor. The NEDC overall fuel consumption rating is just 8.7 litres
of fuel over a distance of 100 kilometres.
As standard equipment, the SLK 200 KOMPREssOR and SLK 350 are going to
the starting grid with a six-speed transmission equipped with short,
fast shift lever strokes and high levels of shift precision. As an
option, the four-cylinder engine can be twinned with the tried and
tested five-speed automatic transmission while the new six-cylinder can
be paired up with the 7G-TRONIC seven-speed automatic transmis-sion. To
reflect the dynamic character of the new SLK-class, drivers can operate
both automatic transmissions using gearshift buttons mounted on the
steering wheel (as an optional extra) to select the desired ratio.
The distinguishing features of the sports-tuned suspension are the new
design of three-link front axle, the rack-and-pinion steering unit and
an even more powerful braking system than the previous model. Mercedes
engineers have modified many details of the multi-link independent rear
suspension unit and have adapted it to suit the increased track width of
this new model. Depending on the choice of model, standard equipment in
the new SLK-class can include 16, 17 or even 18-inch alloy wheels.
Low-slung sports suspension is also available as an option.
Comfort: AIRSCARF – a world first for even greater top-down driving pleasure