Rupert Stadler is being investigated on suspicion of fraud and indirect improprieties with documents.
Newsmagazine report claims the automakers have colluded for years over diesel technology.
Giovanni Pamio is accused of being a leader in a conspiracy that has cost VW more than $20 billion in criminal penalties
Many will also have the choice to return their vehicle at the buy-back price as of mid-September 2015.
VW and Audi vehicles with 2-litre diesel engines make up the bulk of those caught up in Volkswagen’s emissions cheating scandal.
The electric car maker wants to produce 500,000 vehicles per year by 2018, two years earlier than initially planned.
Covers vehicles from model years 2006 to 2014.
US sales were down 15.3% to 45,300 units.
Automaker blames stop-sale orders for diesel-powered vehicles.
Government estimates there are 35,000 of the Volkswagen and Audi models in the province equipped with the software.
The automaker’s top US manager will appear before Congress Oct. 8.
Software turns off controls on diesel models allowing them to boost power, exceed pollutant limits.
Technology is part of a new era in vehicle safety in which the focus is on preventing crashes rather than on protecting occupants.
Will feature three electric motors to take on Tesla Model X.
Consumer Reports finds Audi, BMW and Subaru among biggest offenders.