ATLANTA — Porsche Cars North America on Tuesday said it will stop sales of 2014-'16 Porsche Cayenne Diesel SUVs until further notice, following an EPA announcement that some Volkswagen, Porsche and Audi models with 3.0-liter six-cylinder diesel engines are equipped with defeat devices to skirt U.S. clean-air standards.
The decision was made "in view of the unexpected U.S. EPA notice," the automaker said in a statement.
It added: "We are working intensively to resolve this matter as soon as possible. Customers may continue to operate their vehicles normally."
Porsche said it "voluntarily" decided to halt sales of the Cayenne Diesel.
The Volkswagen diesel-emissions scandal grew on Monday when the EPA announced that illegal software was used on the 2015 Porsche Cayenne, 2014 Volkswagen Touareg, 2016 Audi A6 Quattro, A7 Quattro, A8, A8L and Q5 vehicles with VW's 3.0-liter diesel engine.
An Audi of America spokesman told Edmunds no decision has been made on whether to stop the sale of the affected Audi vehicles.
A decision from Volkswagen on a possible stop-sale order on the Touareg may come sometime this week.
Edmunds says: Car shoppers must scratch the 2014-'16 Porsche Cayenne diesel SUV off of their lists for the time being.