Carl-Peter Forster, the chief executive of Tata Motors, has stepped down.
Tata, the owner of Jaguar and Land Rover, says 'unavoidable personal circumstances' have caused Foster to leave.
Tata chairman Ratan Tata said: 'The board respects Carl-Peters personal circumstances that led to this move. We would like to thank him for his contributions.'
Forster said: 'I deeply regret that my personal circumstances make it difficult for me to continue to perform the challenging duties of managing the thriving global activities of the Tata Motors Group with its main activities in India and the UK.'
Forster became global ceo of Tata Motors in February 2010.