units of this model could be found in use in the region of Belo Horizonte, Brazil between 1994 and 2006. O371UP The O371UP was an integral bus and platform for urban use, having been produced from 1987 to 1993. It was the most powerful integral bus of Mercedes-Benz ever produced, featuring a 187 hp OM355/5A 9.6l 5-cylinder engine, with its use being recommended to cities with integrated transport systems. By far, the Brazilian city that saw the most units of O371UP integral buses and platforms in operation was Curitiba. O371 Coaches (bus) Vehicles introduced in 1980