Opel Wien GmbH (formerly GM Powertrain Austria GmbH) is an Austrian manufacturing company based in Vienna / Aspern, Austria and was a subsidiary of General Motors. Currently a subsidiary of the Dutch-based multinational automotive manufacturer Stellantis since 16 January 2021. History The Austrian Chancellor Dr. Bruno Kreisky and GM Austria Chairman Helmuth Schimpf signed a contract to build an engine plant in Vienna/Aspern on August 23, 1979. The investment amounted to over 9,8 billion Schilling. Products Opel Wien GmbH produces Family 0 engines, 5 and 6-Speed transmissions for Opel/Vauxhall and Chevrolet/Buick. See also List of GM engines List of GM transmissions Opel Eisenach IBC Vehicles References External links Opel Wien official corporate website (German) Opel factories Manufacturing companies based in Vienna