VW chief apologizes over emissions scandal on first US trip

Volkswagen chief executive Matthias Mueller apologized for cheating diesel car emissions tests on his first official US visit since the scandal broke in September. The Wolfsburg-based group admitted it installed software in around 11 million diesel cars of its VW, Audi, SEAT and Skoda brands worldwide that helped them evade emissions standards after US regulators discovered the problem. The affair severely damaged Volkswagen's reputation and spawned a host of investigations in several countries.