Volkswagen may take legal action against former chairman Ferdinand Piech following allegations that he told senior executives about the diesel emissions cheating device six months before it was exposed . Volkswagen informed then - CEO Michael Winterkorn , and other members of the steering committee of the supervisory board , about the cheating devices in March 2015 , according to reports by Germany 's Bild am Tag newspaper . Piech left the firm the following month . Winterkorn is also under investigation for his role in the scandal .
Volkswagen may take legal action against former chairman Ferdinand Piech following allegations that he told senior executives about the diesel emissions cheating scandal six months before it was exposed. Piech informed then-CEO Martin Winterkorn, and other members of the steering committee of the supervisory board, about the cheating devices in March 2015, according to reports by Germany's Bild am Sonntag newspaper. Piech left the firm the following month. Winterkorn is also under investigation for his role in the scandal.