One of the most iconic SUVs around, the Mercedes-Benz G-Class is a luxurious yet rugged sport-utility vehicle now in its fourth decade of production. The Mercedes-Benz G-Class was originally developed for military use as a heavy-duty four-wheel-drive conveyance. Updated over the decades and given the latest Mercedes accoutrements, luxury, refinement and sheer presence have supplanted pure functionality as the G-Class's chief attractions.