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’s 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 280 - 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 (Official figure, actual time is 4.3 seconds), top speed 155 mph (electronically limited, some models come unlimited). A tuned version of this was used as the Formula One safety car, replaced by CLK 63 AMG at the beginning of 2006 Season.
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

r171