More VW vehicles have emission-cheating devices: US

Volkswagen (VW) has admitted there are more diesel vehicles that use defeat devices to circumvent emissions tests, the US government has said.

Volkswagen officials told the US Environmental Protection Agency (EPA) and the California Air Resources Board (CARB) on Thursday that they installed defeat devices in all Volkswagen and Audi vehicles equipped with three liter diesel engines for model years 2009 through 2016, Xinhua quoted the EPA and CARB as saying in a statement.

"Based on this information, EPA and CARB will continue to investigate and will take appropriate action under their respective authorities," the statement said.

On September 18, the EPA and CARB issued a notice of violation alleging that about 482,000 VW and Audi diesel cars equipped with two liter engines for model years 2009 through 2015 included defeat devices that circumvents EPA emissions standards for nitrogen oxides.

On November 2, the US regulators issued a second notice of violation alleging that Volkswagen installed defeat devices in certain Volkswagen, Audi and Porsche light duty diesel vehicles equipped with three liter engines for model years 2014 through 2016 that increase emissions of nitrogen oxide up to nine times EPA's standard.