Glowing with genuine character, the long awaited Mercedes-Benz GLK is set to take the world of compact SUVs by storm. Potential customers can be guaranteed the new compact SUV has been exposed to some of the most relentless testing and development processes. From sub-zero temperatures in Sweden to the burning heat in Africa, the new compact GLK has been put through its passes in the most demanding of climatic conditions. This extreme testing and development has allowed Mercedes-Benz engineers to rectify any potential system faults or weaknesses prior to release. Automotive Tv goes along for the ride and reveals how Mercedes-Benz engineers push the boundaries of extreme testing.