In September 2015, the industry - and VW in particular - was dealt a seismic shock when it became clear that VW had sought to cheat US emission testing procedures with its diesel vehicles. Since then there has been much debate as to the impact this revelation - and other subsequent revelations - will have on diesel demand and on the company. In terms of diesel demand, the focus is on the European situation, as the market accounts for over 50% of worldwide light vehicle diesel volume. After considering the diesel market, the attention then switches to examining the particular impact on VW as a company.