BERLIN — General Motors Co.’s Opel unit said Monday that it plans to end car production at one plant in Germany in 2016, but a slimmed-down factory may continue to make components.

Employees at the Bochum plant in northwestern Germany, one of four in the country, were told that vehicle production will end when the company stops making the current Zafira model. That was widely expected after the company announced a turnaround plan in June, and ‘‘despite intensive efforts this situation could not be changed,’’ Opel said.