Adam Opel AG is a wholly owned subsidiary of General Motors. Headquartered in Germany, the company has been making cars since 1899. GM bought into Opel in 1929 and took full control in 1931. Opel vehicles have been sold under the Buick brand in America and the Holden brand in Australia as well as true Opels that are sold in Africa, Asia, South America and throughout Europe. The Vauxhall brand is also under the Opel umbrella.

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