The second generation mercedes benz slk internally designated model r171 is a two passenger front engine rear drive retractable hardtop roadster unveiled at the 74th geneva international motor show and manufactured and marketed for model years 2004 2010. Mercedes benz slk r171 series 2004 2011 by brian long february 15 2016 8250 hardcover earn 413 plum r points add to cart wish list buy online ship to an address ships within 1 2 months free shipping on orders over 35 pickup in store to see if pickup is available select a store buy in store not sold in stores prices and offers may vary in store about the second in a . The mercedes benz slk class is a compact luxury roadster the r171 slk was unveiled at the 2004 geneva motor show it features increased use of high strength steel and improvements to the cars torsional strength and aerodynamic efficiency models feature a more compact revised roof mechanism that is operated in 22 seconds previously 25 seconds resulting in an increase in boot . The original mercedes benz slk was a car ahead of its time the first modern car with a folding steel roof all wrapped up in a stylish little roadster the second generation slk not only has a new selection of powerplants but is also the drivers car that the previous version always promised to be it is altogether more refined and better equipped competing well with the other cars in its