The Mercedes-Benz GLK (codename X204) was a compact luxury crossover SUV that went on sale from the autumn of 2008 after its public debut at the 2008 Beijing Auto Show alongside the competing Audi Q5.The name GLK is an acronym for Geländewagen Luxus Kompaktklasse, taking its name from larger Mercedes-Benz GL-Class, which in turn was named after the G-Wagen or Geländewagen. Thus, the GL is the luxury-oriented version of the G, and GLK is the compact version of the GL.