Diesel Emissions: EU Commission Has Known for Years about Manipulation

By Markus Becker in Brussels

The European Commission insists that it knew nothing about diesel emissions manipulations perpetrated by Volkswagen and other automobile manufacturers. Documents obtained by SPIEGEL ONLINE show otherwise.

Since at least 2010, the European Commission has been in possession of concrete evidence that automobile manufacturers were cheating on emissions values of diesel vehicles, according to a number of internal documents that SPIEGEL ONLINE has obtained. The papers show that emissions cheating had been under discussion for years both within the Commission and the EU member state governments. The documents also show that the German government was informed of a 2012 meeting on the issue. The scandal first hit the headlines in 2015 when it became known that Volkswagen had manipulated the emissions of its diesel vehicles.

The records provide a rough chronology of the scandal, which reaches back to the middle of the 2000s.

Back then, European Commission experts noticed an odd phenomenon: Air quality in European cities was improving much more slowly than was to be expected in light of stricter emissions regulations. The Commission charged the Joint Research Centre (JRC) — an organization that carries out studies on behalf of the Commission — with measuring emissions in real-life conditions. To do so, JRC used a portable device known as the Freeway Performance Measurement System (PeMS), which measures the temperature and chemical makeup of emissions in addition to vehicle data such as speed and acceleration. This technology, which was later used to reveal VW emissions manipulation in the United States, was largely developed by the JRC.

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Read the full article on Spiegel International