In 1974, the Paris Motor Show served as a very suitable backdrop for the launch of the new Mercedes-Benz O 303 touring coach. It followed in the style of its predecessor, the O 302, albeit with a more modern design. In addition to being incredibly robust in terms of technology, it was also distinguished by its almost unbelievably large number of variants. The unique range included up to seven lengths and various heights along with equipment and door variants. The next step up to premium class luxury coach was achieved from 1979, with the O 303 long-distance high decker. Ongoing modernisation ensured the O 303 remained up to date, e.g. with ABS anti-lock braking system, acceleration skid control (ASR) and electro-pneumatic gearshifting (ESP) with a joystick as a forerunner of fully automated transmission. Around 38,000 units of the O 303 were built up to 1992.