VW’s emissions scandal

How it all came to light.

When questions were raised about nitrogen oxides being emitted by European diesel vehicles, a small nongovernmental organization commissioned a study from West Virginia University, initiating a long chain of events that would eventually lead to a Volkswagen official admitting that the carmaker had been intentionally cheating through so-called “defeat devices.” This article from http://www.detroitnews.com/story/business/autos/foreign/2015/09/24/vw-caught/72715074/ describes how it all happened.