The Mercedes-Benz G-Class or G-Wagen (as it was called from 1979 to 1994), short for Geländewagen (or cross-country vehicle), is a four-wheel drive vehicle / sport utility vehicle (SUV) produced by Steyr-Puch (now Magna Steyr) in Austria for German automaker Mercedes-Benz. The G-wagen is characterized by its boxy styling and body-on-frame construction. It uses three fully locking differentials, one of the few vehicles to have such a feature. Despite the introduction of an intended replacement, the unibody crossover SUV Mercedes-Benz GL-Class in 2006, the G-Class is still in production and is the longest produced Mercedes-Benz in Daimler's history, with a span of 32 years.