More diesel models made by the VW Group have been caught skirting US emissions regulations, according to the EPA.

The U.S. Environmental Protection Agency said Monday it found the 3.0-liter V6 TDI sold in numerous VW Group cars has been fitted with a so-called emissions defeat device like the ones the nearly 500,000 VW TDIs that have already been investigated by the federal agency, according to The Detroit News‘s David Shepardson.

With the device, these engines have been shown to emit at least nine times the allowable NOx. About 10,000 2014-2016 models were sold in the U.S. with the 3.0-liter TDI, according to the EPA, from the VW Touareg to the Porsche Cayenne and Audi A6, A7, A8 and Q5.

Following the investigation into the 2.0-liter TDIs from VW, the EPA announced a probe into all diesels sold in the U.S. According to The Detroit News, emissions-cheating devices have only been found in models from VW Group at this point.

The full EPA report is here. So far, VW Group has not issued a stop-sale on 2016 models equipped with this TDI, but will very likely be forced to soon.

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