FRANKFURT -- A chronology of Opel's history and its sale to PSA Group.
1863: Adam Opel set up a sewing machine workshop in the western German town of Russelsheim. He later made bicycles as well.
1899: Opel's sons, who took over the business, bought a car factory. They built their first automobile that year.
1928: Opel claimed the spot as Germany's biggest carmaker, with a market share of 38 percent.
1929: General Motors bought Opel for $33 million.
1962: The company built a factory in Bochum, Germany, and later, German plants in Kaiserslautern und Eisenach.
1999: GM Europe made a profit.
2004: GM announced plans to cut 12,000 jobs in Europe, of which about 6,000 were at Opel.
Nov 2008: GM faced a liquidity squeeze. Opel asked Germany for state loan guarantees.
Dec 2008: Germany said it is looking at various options to help Opel.
Feb 2009: General Motors presented a restructuring plan to the U.S. government, put its Swedish carmaker Saab up for sale and announced $1.2 billion of cost cuts in Europe.
June 2009: GM filed for bankruptcy.
July 2009: GM emerged from bankruptcy, majority owned by the U.S. government.
Sept 2009: GM agreed to the sale of a 55 percent stake in Opel to a group led by Canada's Magna International Inc.
Nov 3, 2009: GM reversed the sale decision and instead said it will keep control of Opel.
Feb 9, 2010: Opel asked Germany for 1.5 billion euros in state aid to fund restructuring; 4,000 job cuts.
Mar 2, 2010: GM said it will triple its funding of Opel to 1.9 billion euros in equity and loans and cut its request for state aid.
Mar 12, 2010: Britain said it will provide a 270-million-pound loan guarantee to help safeguard the company's Vauxhall operations in the UK.
Apr 30, 2010: GM said it will close a factory in Antwerp, Belgium by the end of 2010 with 400 million euros for termination benefits.
2012: Opel presented a 10-year turnaround plan to introduce 23 new or revised vehicles, with 13 new engines, by 2016.
Feb 2012: GM took a 7 percent stake in PSA after the companies announced an alliance, promising eventual savings of $1 billion each.
Oct 31, 2012: General Motors Europe (GME) outlined a target to achieve break-even EBIT-adjusted results by mid-decade through a focus on growth and cost efficiencies.
Dec 2012: GM decided to close Bochum on Dec. 10, 2012. The last car came off the production line on Dec. 6, 2014 with closure costs of at least $866 million.
Apr 10, 2013: GM pledged to invest 4 billion euros to fund 23 new cars and 13 new engines at Opel by 2016.
Oct 2013: PSA and GM said they are scaling back their alliance.
Mar 2013: Karl-Thomas Neumann appointed chairman of the board of Adam Opel and president, Europe.
Dec 5, 2013: General Motors said it will drop the Chevrolet brand in Europe by the end of 2015 and focus its efforts on reviving Opel and Vauxhall.
Dec 10, 2013: GM announced that company veteran Mary Barra will become CEO of GM in January 2014, while installing former investment banker and CFO Dan Ammann as president.