Mercedes-Benz R171 is First Produced

R171 represents the second generation of Mercedes-Benz SLK and is slightly larger than its predecessor the R170.

The Mercedes-Benz SLK-Class is a luxury roadster built by the German manufacturer Mercedes-Benz since 1997. The name was chosen to reflect the company's intentions for the car - that it be Sportlich (sporty), Leicht (light), and Kurz (short). There have been two generations of SLK cars from Mercedes-Benz.
Like its predecessor, the R171 featured a retractable hardtop. By the time the R171 was released, this had become an increasingly common feature in almost every newly introduced convertible, especially in Europe.
The SLK was updated in 2004 with a new Formula One-inspired appearance and serious performance; the new model also took design cues from the Mercedes-Benz Vision SLA concept car, presented in 2000.
The vehicle was unveiled in 74th Geneva International Motor Show.
Mercedes-Benz SLK-Class went on sale in Europe in 2004-03-27.

Mercedes Benz introduced a facelifted version of the SLK R171 in 2008. The roadster features slight visual changes in order to achieve a more pronounced arrow shape. The front an rear sections of the SLK were retouched by receiving a new front apron, darkened headlamps, restyled front side air intakes and rear diffuser-style lower section. Significant changes have also been undertaken to the interior, that features a more driver-oriented layout and uprated materials. Engine-wise, the SLK brings a new sport-derived V6 engine and improved fuel consumption and CO2 emissions throughout the range. The 3.5L V6 petrol unit underwent several technical modifications in order to make it more sporty and fuel efficient. The changes done to the valve train system, a new intake manifold and higher compression ratio allow the V6 unit to produce 305 hp while improving fuel consumption by 1.1 liters per 100 km.

The SLK was substantially revised in 2004 with a revised body and enhanced performance. For 2005 the new R171-platform SLK was named one of Car and Driver Ten Best and won the Canadian Car of the Year's Best New Convertible award. The current SLK's are built in Bremen, Germany and Mexico city, Mexico. (Assembly at Mexico City plant is disputed, only final prep is done there for cars delivering to that area).
Models of the new SLK include:
SLK 200 Kompressor - 1.8 L 120 kW (163 hp DIN) 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 - 3.0 L (2996 cc) 170 kW (231 hp DIN) 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 hp DIN) 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 hp DIN) V8 engine, 0-100 km/h (62 mph) 4.9 seconds, top speed 155 mph. 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.
A face-lifting of the R171, with more powerful engines, has been presented at the end of 2007.
SLK 200 Kompressor - 1.8 L 135 kW (184 hp DIN) I4 supercharged engine
SLK 350 - 3.5 L (3498 cc) 224 kW (305 hp DIN) double overhead cam V6 engine