After the Volkswagen AG (VW) in September 2015 had to admit to have sold diesel vehicles with defeat devices in the US, it became public, that vehicles with prohibited software were also placed on the market in Europe. Further, it became public, that not only VW but more developers sold cars with defeat devices.
Afterwards the former minister of transport and digital infrastructure, Alexander Dobrindt, created the investigative commission “Volkswagen”. On behalf of this commission comprehensive emission measurements on more than 50 vehicles of various manufacturers were conducted, in order to identify defeat devices and prohibited systems to determine test environments and test cycles. In the following the reports of this commission are published.
First report by the “Volkswagen” Commission of Inquiry (Nitrogen oxides/NOx)PDF, 2MB, File does not meet accessibility standards
Second Report by the "Volkswagen" Commission of InquiryPDF, 662KB, File does not meet accessibility standards
Within the first report the first results in terms of nitrogen oxides (NOx) as well as determined conspicuous features with respect to defeat devices were published in April 2016. For these tests, diesel vehicles were observed.
The second report enables statements about the carbon dioxide (CO2) emissions of the observed vehicles, which displayed noticeably high CO2 emissions.
The publication of the second report of the 26th of June 2017 documented the conducted tests of vehicles, which were type approved by KBA as well as vehicles of German manufacturers, which were type approved from another European type approval authority.
In the comprehensive version of the second report from the 8th April 2020, CO2 emissions of vehicles, which were not type approved by KBA, are displayed and evaluated as well.
Effectiveness of Software Updates for the Reduction of Nitrogen Oxides in Diesel EnginesPDF, 4MB, File does not meet accessibility standards
Market Surveillance Report 2019PDF, 3MB, File does not meet accessibility standards