DETROIT — Audi AG will revise emissions-control software on Volkswagen Group vehicles with 3.0-liter diesel engines in the U.S. to comply with clean air laws, the automaker said late Monday. It will also extend its U.S. stop-sale on new VW, Audi and Porsche models with 3.0-liter V6 TDI diesel engines "until further notice."
The move, which affects more than 85,000 Volkswagen Group vehicles from model year 2009 to the present, comes after a meeting last week with Audi officials, the Environmental Protection Agency and California Air Resources Board.
The Volkswagen/Audi diesel-emissions crisis grew last week after the EPA announced that the automaker used "defeat device" software on more six-cylinder diesel vehicles than originally reported. About 10,000 vehicles were originally said to have the illegal software.
The engine is used on diesel versions of the Audi A6, A7, A8, Q5 and Q7 starting in the 2009 model year. It is also used in the Volkswagen Touareg and Porsche Cayenne SUVs since model year 2013, Audi said in a statement.
"The updated software will be installed as soon as it is approved by the authorities," Audi AG said in a statement.
It added: "The three brands Audi, Porsche and Volkswagen are affected."
On November 20, VW and Audi officials told EPA and CARB that all 3.0-liter diesel engines from model years 2009 through 2016 are equipped with auxiliary emissions control devices, including one that is regarded as a "defeat device" to skirt U.S. emissions rules.
"Specifically, this is the software for the temperature conditioning of the exhaust-gas cleaning system," Audi said.
An EPA spokeswoman told Edmunds that the EPA and CARB continue to investigate VW and Audi.
"The agencies continue to insist that VW and Audi develop effective, appropriate remedies as expeditiously as possible, and at no cost to owners," the EPA said in a statement.
The EPA and CARB "would need to fully evaluate and test any (VW or Audi) remedy for effectiveness before it could move forward," the EPA said.
Audi said the focus "will be on finding quick, uncomplicated and customer-friendly solutions." It also noted, "All affected models continue to be safe and roadworthy."
VW submitted an initial proposal to the EPA and California air regulators for potential remedies in its diesel-emissions scandal on Friday, but the details are not being disclosed to the public, the automaker told Edmunds.
Volkswagen confirmed that it met with regulators to address emissions violations with the company's 2.0-liter diesel vehicles.
"We continue to fully cooperate with EPA and CARB (California Air Resources Board) as we work to develop an approved remedy as quickly as possible," VW said in a statement late Friday. "The United States continues to be one of the important markets for Volkswagen Group where we have made significant investments over the years. Volkswagen is committed to making things right and regaining the trust of our valued customers."
Volkswagen spokeswoman Jeannine Ginivan said the company is "unable to provide details of this meeting or of the proposal for potential remedies."
Edmunds says: Affected VW and Audi owners still have no concrete solution or timing on a fix for these vehicles.