Mercedes-Benz G Class (1979 – present day). The G-Class (or G-model, G stands for off-road vehicles) is a model series of Mercedes-Benz, which is produced since 1979. In its basic form, the vehicle was hardly changed between 1979 and 2018, but technically it was constantly being improved and updated. These concerned mainly engine variants, the interior and safety features. In 2018, Mercedes-Benz presented a new generation. By July 2017, Mercedes-Benz built over 300,000 vehicles. Older, well-kept models are already traded to connoisseur prices in the classic scene.