Porsche Cayenne Diesel
3.0-liter diesel engines implicated in latest agency notice
Volkswagen is pushing back against the EPA’s statement, released on Monday, that implicated Volkswagen, Porsche and Audi vehicles with 3.0-liter TDI engines in an emissions-cheating scandal.
The EPA issued a Notice of Violation that named the 2014 model year Volkswagen Touareg, 2015 Porsche Cayenne Diesel, 2016 Audi A6 Quattro, A7 Quattro, A8, A8L and the Q5 in possession of so-called emissions “defeat devices.”
The agency detailed the operation of the alleged defeat devices in these vehicles, which it said work in a similar fashion to the devices found earlier in VW vehicles.
“In sum, as soon as the vehicle senses that it is not being tested, is uses “normal mode.” In “normal mode,” tailpipe emissions of NOx are up to 9 times the applicable NOx standard levels, depending on model type and type of drive cycle (e.g., city, highway),” the EPA stated in the Notice of Violation.
Volkswagen received the notice from the EPA late in the day on Monday, Nov. 2, and has issued a statement indicating that the EPA is incorrect in its implication of emissions cheating on those models.
“The United States Environmental Protection Agency (EPA) informed Volkswagen Aktiengesellschaft on Monday that vehicles with V6 TDI engines had a software function which had not been adequately described in the application process. Volkswagen AG wishes to emphasize that no software has been installed in the 3-liter V6 diesel power units to alter emissions characteristics in a forbidden manner,” Volkswagen stated.
Porsche also issued a statement in response to the EPA notice.
“We are surprised to learn this information. Until this notice, all of our information was that the Porsche Cayenne Diesel is fully compliant,” the company said.
Volkswagen has not disputed the presence of emissions-cheating software in the models that were initially named by the EPA more than a month ago, when the diesel crisis first broke, though the company has indicated it intends to dispute the presence of defeat devices in the 3.0-liter TDI engines.