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Imported car companies that illegally manipulated the emission reduction device were also caught. Contaminants were detected up to 13 times in these imported cars, and a recall order was issued for about 40,000 vehicles sold by 2018

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vehicles operated by the Ministry of Environment are operated by Benz, Nissan, and Porsche.

This is the first time Benz has been caught in the manipulation of emissions.

As a result of investigation by the Ministry of Environment, a program was set up in these vehicles to reduce the injection amount of urea water to suppress nitrogen oxide emissions from 20 to 30 minutes after driving or to lower the utilization rate of the exhaust gas recirculation system.

As a result, the Ministry of Environment explained that nitrogen oxide, a pollutant, was discharged up to 13 times the standard value.

[Bakjunhong / National Institute of Environmental Research Researcher: whether it is to avoid that (the number of elements in the tank), a large number of elements consumption largely be designed, discomfort and difficulties of such production (estimates)

revealed the emissions manipulation of imported cars This is already the seventh, including the 2015 Audi-Volkswagen case.

The cause is the exhaust gas test standards that were insufficient at the time.

Caught diesel vehicles did not take road driving emissions tests in the past, but passed the certification only through indoor tests.

The Ministry of Environment canceled more than 40,000 certifications sold between 2012 and 2018 and issued a recall order.

In addition, they agreed to charge a fine of close to 80 billion won to the three companies and to prosecute them.

Mercedes-Benz Korea said it could not agree with the results of the Ministry of Environment's investigation, saying it would proceed with the objection.