Two former Audi executives and two engineers are facing charges in a prolonged trial concerning the massive 'Dieselgate' emissions scandal in Germany's auto industry. Failure to reach a plea deal means the legal case is expected to continue through the court system.

Two former Audi bosses and two engineers are facing charges over "Dieselgate," a massive emissions scandal that still haunts Germany's automobile sector. As no plea deals could be reached, a long trial seems likely.