Adam Opel AG
D-65423 Rüsselsheim am Main
Adam Opel AG was founded by Adam Opel in Rüsselsheim, Germany, in 1862 and is part of General Motors. Opel headquarters remain located in the brand’s hometown of Rüsselsheim. The automaker has 10 manufacturing plants and operates three development and test centers in seven European countries; it has over 38,000 employees with more than 19,000 of those in Germany.