Complex sentence: The Mercedes-Benz O405 was a highly successful single-decker bus manufactured by Mercedes-Benz from the mid- 1980s to the early 2000s as either an integral bus or a bus chassis and was the last VöV SL-II standard bus in production.
Split into simpler sentences: The Mercedes-Benz O405 was a highly successful single-decker bus manufactured by Mercedes-Benz from the mid- 1980s to the early 2000s. It can be built as either an integral bus or a bus chassis andwas the last VöV SL-II standard bus in production.