2009 Mercedes slk 350 horsepower Source Source Source Source Source Source Source Read Also: How much horsepower does a 2009 mercedes c300 have 2009 Mercedes s63 amg horsepower 2009 Mercedes c63 amg horsepower 2009 Mercedes c300 4matic horsepower 2009 Mercedes sl63 amg horsepower 2009 Mercedes s63 horsepower