The company said in a statement Tuesday that Thomas Steg was stepping away from his duties at his own request.
The move follows a report in The New York Times that the now-disbanded EUGT commissioned the test to show how Volkswagen's diesel technology was succeeding in controlling emissions. But the test was done with a vehicle rigged to cheat on emissions tests. The practice was exposed in 2015, toppling then-CEO Martin Winterkorn. (AP)