The development of the third generation SLK-class began in 2005. The final design was approved by the company's board in 2008. Officially, Mercedes-Benz announced a new generation of compact roadsters in the fall of 2010, which allowed car magazines to test a disguised test car a few months before the official announcement in January 2011. The official public debut took place at the Geneva Motor Show in March 2011. The company made a rather unusual step for her, releasing several press releases in October and November 2010, which reported on the novelties of the model, in particular, the Magic Sky Control system, which allows to change the degree of transparency of the convertible top.