Honda's damaged Thai factory is back online but only operating at 12 percent of capacity.

Honda has restarted production at its factory in Ayutthaya, Thailand after devastating floods took the facility offline nearly six months ago.

Though the plant is once again operational, it is currently only operating at about 12 percent of capacity, the BBC reports. Honda is still working on repairing the plant, which was submerged beneath water at least 10 feet deep; restoring it to its full 240,000 unit annual output is expected to cost $650 million.

Honda was the only automaker whose Thai factory was completely flooded, although other carmakers and supply companies were affected by deluge to a lesser degree. Toyota and Nissan were able to resume production at their respective plants in the country in late 2011.

Honda estimates that the floods reduced its annual production by 260,000 vehicles in the business year ending this month.