VDO is a brand of Continental Automotive. Products under the brand include automotive electronics and mechatronics for powertrain, engine management system, fuel injection Systems. A full range of Tachograph and Data Management products and Telematics. Also since 1957 VDO supply Marine solutions for pleasure boats, yachts and sailing boats, wherewith with over 60 years of experience VDO stands as one of the oldest marine suppliers in the industry
VDO was founded by Adolf Schindling and the result of a merger between DEUTA (Deutsche Tachometer-Werke GmbH, English: German Speedometer Works, Ltd.) and OTA Apparate GmbH (Offenbacher Tachometer-Werke GmbH, English: (City of) Offenbach Speedometer Works, Ltd.) in the German city of Frankfurt am Main in 1929. VDO stands for "Vereinigte DEUTA - OTA, English: United DEUTA - OTA."
In 1991, the company was acquired by Mannesmann. In 1999, Mannesmann was itself acquired by Vodafone and VDO was put up for sale. In 2000, the company was acquired by Siemens AG, Germany's biggest engineering company, and re-branded as Siemens VDO.
- "VDO - Global Website". Global Website. Retrieved 2017-07-28.
- Lerner, Franz (1958). Frankfurt am Main und seine Wirtschaft, Wiederaufbu seit 1945. Ammelburg Verlag.
- "Siemens-Mannesmann Link Is Set". The New York Times. The New York Times Company. 20 March 2000. Retrieved 6 January 2013.