2017年12月31日 · The Mercedes-Benz O530 Citaro (or simply Citaro) is a low-floor, wheelchair-accessible, single-deck city bus built by Mercedes-Benz and EvoBus GmbH. As the successor to the older O405/O405N series, the Citaro is highly popular around the world, with over 45,000 units built from 1997 to 2015.