Here are the official details and photos with the 2012 Mercedes SLK, a model which has been leaked few months ago, probably you remember. The Stuttgart-based model offers two 1.8-liter petrol engines developing 185 horsepower (SLK200) and 205 horsepower (SLK250) while another 3.5-liter V6 engine (SLK350) provides 305 horsepower and coupled to an automatic seven-speed