Mercedes-Benz SLK-Class
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| Manufacturer | Mercedes-Benz |
|---|---|
| Production | 1996-present |
| Class | Sports car |
| Body style | 2-door coupe 2-door convertible |
| Layout | FR layout |
As one of the first modern retractable hardtop convertibles, the SLK followed the 1995 Mitsubishi 3000GT Spyder and preceded other retractable hardtops such as the Peugeot 206cc, Lexus SC, Pontiac G6 and the Chrysler Sebring. The SLK Vario-roof was first shown on the SLK II concept car at the 1994 Paris Motor Show.[1] The car went on sale two years later in Europe, and in 1997 in the US. The SLK is built in Bremen, Germany.
The designation SLK derives from the company's design mission to create a roadster that was at once sporty, light and short — in German: Sportlich, Leicht und Kurz.[2]
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[edit] Mercedes-Benz SLK-Class (1996–2004)
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| Production | 1996–2004 |
|---|---|
| Assembly | Bremen, Germany East London, South Africa |
| Platform | Mercedes-Benz R170 |
| Engine | 2.0 L I4 2.3 L I4 S/C 3.2 L V6 |
| Transmission | 5-speed automatic 5-speed manual 6-speed manual |
| Wheelbase | 94.5 in (2,400 mm) |
| Length | 1996-2000: 157.3 in (3,995 mm) 2001-04: 157.9 in (4,011 mm) |
| Width | 67.5 in (1,715 mm) |
| Height | 1996-2000: 50.7 in (1,288 mm) 2001-04: 50.4 in (1,280 mm) |
| Curb weight | 3,036 lb (1,377 kg)[3] |
| Related | Chrysler Crossfire |
Main article: Mercedes-Benz R170
The SLK-Class was launched in 1996 on the new R170-platform,[citation needed] The SLK 230 Kompressor launch model was designed to compete with the Porsche Boxster and BMW Z3. Based on the 1994 concept SLK I shown at the Turin Motor Show and the SLK II from the Paris Motor Show, it featured an unusual folding hardtop. It was powered by a 193 hp 2.3 L supercharged I4 engine and a choice of automatic transmission or 5-speed manual transmission. The SLK was a modern incarnation of the 1950s Mercedes-Benz 190SL by returning to four cylinders and a 94-inch (2,400 mm) wheelbase. Massively successful in its first year, worldwide sales hit 55,000, over double the entire nine-year production of 190SLs, and between 1996 and 2004, over 311,000 SLKs were sold.[citation needed] The very first R170 Mercedes SLK was completed on January 29, 1997 and last on April 7, 2004.[citation needed][edit] Vario-roof
The roof design developed by Mercedes-Benz consists of a folding steel hard top which is divided in half along an axis at right angles to the direction of travel. Both halves are linked by a kinematic mechanism which is locked securely when the roof is closed. At the touch of a button on the centre console, a hydraulic system with five cylinders controls the fully automatic folding process in which the boot lid is also integrated. It opens by tipping to the rear so that the two roof halves have sufficient freedom of movement to pivot backwards as the vario-roof opens; the roof sections then position themselves one on top of the other, and disappear into the boot. If the roof is to be closed, the same sequence of movements is performed in reverse order. The hydraulic system stows the vario-roof in the upper section of the boot. A plastic roller blind separates it from the luggage space below, an area with a capacity of 145 litres in the first-generation SLK. With the vario-roof closed, the load volume increased to a substantial 348 litres (12.3 cu ft). Two fixed roll-over bars behind the seats worked with the particularly strong A-pillars to form an integrated system offering a high degree of roll-over protection.The steel roof provides added protection normally found in a coupe with the enjoyment of a convertible at the same time. The technology was considered advanced as its rivals still had folding cloth tops.
[edit] R170 facelift (2000)
In 2001 a new AMG model was added, with a 349 hp (260 kW) supercharged version of the 3.2 L V6. This SLK 32 AMG was the most powerful R170 SLK, and was a direct rival of the BMW M Roadster and Porsche Boxster S. It was only offered with the newly engineered five-gear "SpeedShift" and boasted 35% quicker automatic shifts.. All engines were hand built by AMG by an individual engineer. The SLK32 AMG's engine has two spark plugs per cylinder for maximum combustion and was fitted with an intercooled Lysholm-type "twin-screw" supercharger. Brakes became 13.15" diameter from 11.8" standard. AMG production ran between Aug 2000 and March 2004. Only 4,333 were built in total, of which 979 were retained for Germany, 2,056 exported to the USA and 263 to the UK.
In July 2004 a Special Edition was launched prior to the replacement with the new R171 SLK in 2005. The R170 lived on as the Chrysler Crossfire until 2008, sharing substantial elements of the SLK including engines and interiors.
[edit] R170 range summary
Not all models were exported to all markets.- SLK 200 (1996-2000) - 2.0 L (1998 cc) 136 bhp (101 kW; 138 PS) I4
- SLK 200 Kompressor (2000-2004) - 2.0 L (1998 cc) 163 bhp (122 kW; 165 PS) I4 supercharged engine, 0-60 mph in 8.2 seconds, top speed of 223 km/h (138 mph).
- SLK 230 Kompressor (1996-2000) - 2.3 L (2295 cc) 193 bhp (144 kW; 196 PS) I4 supercharged engine
- SLK 230 Kompressor (2000-2004) - 2.3 L (2295 cc) 197 bhp (147 kW; 200 PS) I4 supercharged engine, 0-60 mph in 6.9 seconds, top speed of 240 km/h (148 mph).
- SLK 320 (2000-2004) - 3.2 L (3199 cc) 218 bhp (163 kW; 221 PS) V6 engine, 0-60 mph in 6.5 seconds, top speed of 245 km/h (152 mph).
- SLK 32 AMG (2001-2004) - 3.2 L (3199 cc) 349 bhp (260 kW; 354 PS) V6 engine, 0-62 mph in 5.2 seconds.[4]
[edit] The SLK in the USA
The SLK was announced to the USA market on Sept. 7, 1997 as a 1998 model. The SLK was on Car and Driver's Ten Best list for 1997 and was named “North American Car of the Year” by CAR & DRIVER magazine for 1998. Only in the USA sale of the SL320 (6 cylinder) was ended when the SLK arrived to distance it from the senior SL.[edit] Mercedes-Benz SLK-Class (2004–2011)
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| Production | 2004–2011 |
|---|---|
| Assembly | Bremen, Germany |
| Platform | Mercedes-Benz R171 |
| Engine | 1.8 L I4 3.0 L V6 3.5 L V6 5.4 L V8 |
| Transmission | 7-speed automatic 6-speed manual |
| Wheelbase | 95.7 in (2,431 mm) |
| Length | 4,087 mm (160.9 in) AMG: 4,093 mm (161.1 in) 2009-2011: 161.5 in (4,102 mm) 2009-present AMG: 161.4 in (4,100 mm) |
| Width | 1,788 mm (70.4 in) 1,793 mm (70.6 in) |
| Height | 1,298 mm (51.1 in) 2004-08 AMG: 1,270 mm (50.0 in) 2009-2011 AMG: 50.7 in (1,288 mm) |
| Curb weight | 1,495 kg (3,296 lb) |
Main article: Mercedes-Benz R171
For 2005 the SLK was named one of Car and Driver Ten Best and won the Canadian Car of the Year's Best New Convertible award.
Models of the new SLK include:
- SLK 200 Kompressor - 1.8 L 120 kW (163 PS; 161 hp) I4 supercharged engine, 0–100 km/h (62 mph) 7.9 seconds, top speed of 143 mph. (not available in Canada and the United States)
- SLK 300 (known as SLK 280 in some markets) - 3.0 L (2996 cc) 170 kW (231 PS; 228 hp) double overhead cam V6 engine, 0–100 km/h (62 mph) 6.3 seconds, top speed 155 mph. (starting in 2006 model year)
- SLK 350 - new 3.5 L (3498 cc) 200 kW (272 PS; 268 hp) double overhead cam V6 engine, 0–100 km/h (62 mph) 5.4 seconds, top speed 155 mph (electronically limited).
- SLK 55 AMG - 5.4 L (5439 cc) 265 kW (360 PS; 355 hp) V8 engine, 0–100 km/h (62 mph) 4.9 seconds (official time), tested speed 4.3 seconds, top speed 155 mph (249 km/h). A tuned version of this was used as the Formula One safety car, replaced by CLK 63 AMG at the beginning of 2006 Season. The SLK55 AMG was the first Mercedes tuned by AMG's Performance Studio to a Black Series model.
[edit] R171 facelift (2007)
In January 2008 at the Detroit Motor Show, the SLK-Class facelift was launched, following pre-show announcements in December 2007.[5] The R171 facelift included new engines, with a particular improvement to the SLK 200 and 350 with more power and better fuel efficiency. The exterior changes were subtle, with alterations limited to the front bumper design and new wing mirrors.[6]- SLK 200 Kompressor - 1.8 L 135 kW (184 PS; 181 hp) I4 supercharged engine
- SLK 350 - 3.5 L (3498 cc) 224 kW (305 PS; 300 hp) DOHC V6 engine
- SLK 300 and 55 AMG retained their existing engines
[edit] Mercedes-Benz SLK-Class (2011–)
Main article: Mercedes-Benz R172
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| Manufacturer | Daimler AG |
|---|---|
| Production | 2011– |
| Assembly | Bremen, Germany |
| Predecessor | Mercedes-Benz R171 |
| Class | Sports car, Roadster |
| Body style | 2-door retractable hardtop |
The 2012 Mercedes-Benz SLK350 features a 3.5L V6 that puts out 302hp and torque of 273ft. lbs., matched with a 7-Speed Automatic transmission.[citation needed]
The SLK 55 AMG was announced in August 2011, it features a normally aspirated 5.5 liter V8 with 422hp (310kW) and can reach 100km/h in 4.6 seconds.[11]
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