Mercedes has just released the first presentation video for the GLA concept, which is going to be on display for the first time next weekend in Shanghai. The production version of the GLA concept is going to be Merc's answer to BMW's X1 and Audi's Q3. The Mercedes GLA production version will be available with a choice between 4- and 6-cylinder engines, running on both petrol and diesel. Mercedes might even decide to build a high-performance AMG version of the GLA, but this is just speculation at the moment.