FRANKFURT -- Top German carmakers BMW AG and Audi said on Wednesday the strike in eastern Germany by engineering union IG Metall would affect production at western German plants from June 23.
The strike, over the length of the working week in eastern Germany, has hit the Brandenburg plant of ZF Friedrichshafen, a major supplier of transmissions to most German carmakers.
BMW said the strike would stop production at its Munich factory, where it builds 800 of its 3-Series cars per day and at Regensburg, where it makes 850 of the mid-sized cars.
In addition, production of about 150 out of a total of 1,250 vehicles produced at its Dingolfing plant would be affected, said the company.
The length of disruption depended on the length of the strike.
Volkswagen-owned carmaker Audi said its plants in the southern German towns of Ingolstadt and Neckarsulm would stop producing the daily output of some 1,400 of its A4 and A8 cars.
Europe's biggest carmaker Volkswagen, which has been hit by the strike directly at its Saxon factories, said it was still producing cars in western Germany but that the supply was getting tighter.
The strike has hit one factory of carmaker DaimlerChrysler in eastern Germany.
About 11,400 workers are expected to down tools in eastern Berlin, Brandenburg and Saxony on Thursday as IG Metall fights to cut the working week for eastern German engineering employees by three hours to the western German standard of 35 hours.
The strike, which started last month, spread to Brandenburg and Berlin on Tuesday having originally targeted companies in the state of Saxony. "I very much regret that the strike in Berlin and Brandenburg is now affecting BMW," said Ernst Baumann, head of personnel at BMW in a statement.
Employers have seen the longer working week in the east as an incentive for manufacturers to move production there and BMW is in the process of building a new plant in Leipzig in Saxony which would ultimately employ 5,500 workers.
"It was the goal to create as many jobs as possible in the new German states (in eastern Germany). We must now reconsider this intention, given the current circumstances," said Baumann.