The Korean Ministry of Environment has finally concluded that Audi Volkswagen Korea and Porsche Korea illegally rigged exhaust gas emissions on 10,261 units of 8 Euro 6 diesel models sold in Korea. The ministry will revoke the certification of the models, give the automakers an order to correct the defects, inform them of penalties, and report them to the prosecution.
These diesel models were sold from May 2015 to January 2018 and included three Audi A6 models, two Audi A7 models, two Volkswagen Touareg models and one Porsche Cayenne model, the Ministry of Environment said on Aug. 20
These models were found to have been arbitrarily set up to reduce the amount of injected urea solutions when driving on a highway despite a lack of urea solutions.
A urea solution is an aqueous solution of urea (ammonia) supplied to selective reduction catalyst devices to prune nitrogen oxides from diesel engines. Euro 6 diesel models have separate urea solution tanks. The nitrogen oxide emissions of the Illegally rigged models were found to be more than 10 times higher compared to general driving conditions.
The automakers’ illegal act was uncovered by the Kraftfahrt-Bundesamt (KBA) of Germany , which examined some Audi A6 and A7 models in June last year. The KBA’s investigation prompted the Ministry of Environment to launch an investigation of the models and confirmed the illegal manipulation.