LAs Best 2009 Mercedes Benz SL Class

LAs Best Mercedes-Benz will continue its long tradition of producing legendary sports cars when it launches the new-generation SL-Class in spring 2008. The world's most successful premium roadster in its class features a new design with the emphasis firmly on sportiness and effortless assurance. These traits are also reflected in the handling qualities of the two-seater model, which now delivers even more athletic performance thanks to the new direct-steer system as well as offering enhanced comfort and safety. The SL 350 is powered by a newly developed, extremely high-revving sports engine boasting an impressive output of 232 kW/316 hp yet returns a fuel consumption figure that is 0.4 litres per 100 kilometres lower than that of its predecessor (NEDC). The SL range will now feature two six-cylinder models in the shape of the SL 350 and the new SL 280 (170 kW/231 hp) as well as the familiar SL 500 with a V8 engine and the top-of-the-range SL 600 with a V12 powerplant. The Mercedes sports car extends its lead in the safety stakes courtesy of bi-xenon headlamps, included as standard, and the Intelligent Light System whose light functions are designed specifically for typical driving situations. Further new features on board include AIRSCARF neck-level heating. This system - invented by Mercedes-Benz and available as an optional extra - enhances comfort when driving with the roof down, extending the roadster season until well into the winter months. SL passengers are kept informed and entertained by the standard-fit COMAND multimedia system, which has also been fully redeveloped and features additional functions.

The new-generation SL caps a glorious history of Mercedes sports cars, which began in 1954 with the introduction of the legendary 300 SL "Gullwing", followed in 1957 by the launch of the first SL Roadster. To date, the Stuttgart manufacturer has produced a total of over 630,000 SL sports cars.
Like its predecessors, the new-generation SL also merits its "incomparable" tag. No other sports car in this market segment offers such a perfect balance of sportiness, safety and comfort. These three qualities are the cornerstones of highly eventful, active motoring that provides a profound sense of well-being - for hallmark Mercedes refinement at the highest, sportiest level.

New design idiom with unmistakable sporty overtones

When it came to developing a concept and design for the new-generation SL?Class, the Mercedes-Benz engineers set out with the aim of accentuating the Roadster's sporty attributes even more strongly than before. This aspiration is reflected in the new front-end design featuring as its centrepiece a wide and, therefore, very dominant radiator grille whose V?shape symbolises sporty virtues such as forwards thrust and performance potential.

A horizontal louvre makes the radiator grille appear wider and, in doing so, emphasises the powerful aspect of the SL's front end, making it seem surprisingly new yet also very familiar. By using expressive stylistics in this way, the Mercedes designers are able to forge a link with the SL's history and create a front-end design that is reminiscent of the earlier SL Roadster models, which also expressed their poise and assurance through wide, very distinctive radiator grilles. Hence the front-end design of the new-generation SL shows Mercedes-Benz taking the styling of the legendary sports car to the next level.

The designers also pay homage to the forefather of the SL model series: the two powerdomes on the bonnet and the gill-style air outlets in the front wings are unmistakable hallmarks of the 300 SL from 1954 and have been given a modern interpretation for the new Mercedes sports car.

These classic design features drawn from five decades of roadster tradition are in stylish harmony with new elements of the modern Mercedes design idiom, including the distinctive V-shape of the front section and, above all, the headlamps, which are drawn deeply into the flanks, thus further emphasising the impression of breadth at the front end. As well as giving the SL a highly contemporary look, this striking headlamp design also sees the Roadster continuing its traditional role as a trendsetter. Just like its predecessors, the new?generation SL features a front-end design that will serve as a template for future Mercedes passenger cars.

At the rear, too, the new-generation SL demonstrates its sporty nature even more clearly than before. This is achieved above all by a new, diffuser-look bumper which adds a motorsport touch. In conjunction with the equally new trapezoidal exhaust tailpipes this design element emphasises the width of the body, further symbolising the power just waiting to be unleashed by the roadster.

Direct-steer system: consummate sporty driving pleasure

The SL name is synonymous with driving pleasure as well as design. These Mercedes sports cars have always offered a scintillating driving experience that does not deal in compromises - neither in terms of handling dynamics nor by any means when it comes to comfort or safety. It was under this premise that the Mercedes engineers modified and perfected the SL technology, one example being the new, optionally available direct-steer system, which is as simple as it is ingenious and provides a whole new driving experience when cornering.

This new development is based on the familiar standard-fit speed-sensitive power steering system with lower steering forces - the benefit of which is noticeable above all when driving slowly, manoeuvring or parking. New features include a variable rack ratio, which adjusts in line with the steering angle, increasing sharply as soon as this reaches five degrees. All of which means that, compared to a steering system with a constant ratio, the driver does not have to move the steering wheel as much when cornering. The car's response is therefore noticeably more direct, allowing the driver to steer more spontaneously or, in other words, more sportily.

When driving slowly or parking, the new technology combines with the speed-sensitive power steering to provide even more comfort than before because the large ratio further reduces the steering effort required.

In addition, the SL still offers some of the very finest chassis technology available in the shape of four-link front suspension and multi-link independent rear suspension. Meanwhile the Active Body Control (ABC) system, specified as standard for the SL 500 and the SL 600, is a unique masterpiece. It compensates pitch, roll and yaw on the part of the body and adapts the suspension settings automatically to suit the current driving situation. This makes for excellent agility on the one hand and optimum driving stability on the other, without compromising the car's super levels of comfort. Mercedes?Benz has further fine-tuned the ABC shock-absorber settings for the new-generation SL in order to bring a whole new quality to this unique blend of sportiness, comfort and safety.

Size 255/45 R 17 wide-base tyres and 17-inch light-alloy wheels are fitted as standard on the new SL 280 and SL 350 models, whereas the V8-powered SL 500 Roadster runs on 18-inch wheels shod with 255/40 R 18 tyres. And the exclusive character of the twelve-cylinder SL 600 model is accentuated by 18-inch ten-twin-spoke light-alloy wheels with 255/40 R 18 tyres at the front and 285/35 R 18 tyres at the rear.

Engines: new, extremely sporty six-cylinder powerplant

Mercedes-Benz is extending the SL-Class line-up by introducing an attractive entry-level model in the shape of the SL 280 developing 170 kW/231 hp. The six?cylinder powerplant delivers its peak torque of 300 Nm from 2500 rpm and accelerates the roadster from 0 to 100 km/h in 7.8 seconds, whilst fuel consumption (NEDC) is just 9.4 litres per 100 kilometres.

For the SL 350, the Mercedes engineers have developed a V6 powerplant that brings the sporty qualities of the new SL generation right to the fore. The term "sports engine" could not be more apt: through a process of meticulous engineering, the Stuttgart specialists have further enlivened the temperament of the six-cylinder unit, enhancing its dynamic response dramatically. The engine responds instantaneously to movements of the accelerator pedal and can rev up to 7200 rpm in order to make full use of its power reserves in certain driving situations. Compared to the previous 3.5-litre engine, the output has been boosted by 16 percent to 232 kW/316 hp (at 6500 rpm), while the peak torque has been increased by 10 Nm and now stands at 360 Nm. This powerplant accelerates the new SL 350 from 0 to 100 km/h in a mere 6.2 seconds, making it 0.4 seconds faster than the outgoing SL 350.

In this case, however, the extra power does not come at the expense of fuel economy: with a consumption figure of 9.9 litres per 100 kilometres (NEDC), the new SL 350 undercuts the previous model developing 200 kW/272 hp by 0.4 litres per 100 kilometres.

The sporty character of the V6 power unit is also clearly audible. Its powerfully sonorous sound is the result of meticulous work carried out by sound designers. So these specialists also contribute to the sporty driving pleasure. In this respect, the standard-fit seven-speed automatic transmission also has an important role to play: on the one hand by allowing fast multiple downshifts when accelerating, on the other hand by providing a new double-declutching function that is activated during manual downshifts. As well as producing a sporty sound, this function also enhances comfort and safety as the double-declutching equalises the rotational speeds of the crankshaft and transmission. This set-up gives the driver the advantage of even more harmonious gear changes. Plus there is a noticeable reduction in load-change reactions.

The flagship engines in the SL line-up remain the eight-cylinder unit in the SL 500 developing 285 kW/388 hp and the V12 powerplant in the SL 600, which develops 380 kW/517 hp thanks to its twin turbochargers. The Mercedes engineers also worked meticulously on these models to further reduce fuel consumption by up to 0.4 litres per 100 kilometres.

Tremek Car Video Forum