Volkswagen has informed US regulators that the emissions issue extend to all of the group's luxury cars and SUV's powered by 3-litre V6 diesel engines. This includes 75,000 vehicles from the model years 2009 - 2016.
The United States Environmental Protection Agency and the California Air Resources Board on Nov 2 had accused VW of evading emissions in at least 10,000 Audi, Porsche and VW sport utility vehicles and cars with 3.0-liter V-6 diesel engines, a claim that VW officials had initially denied.
VW Group owned Audi has also admitted that its vehicles had auxiliary emissions control equipment that was not disclosed to the US government. They also stated that the company was willing to work with regulators to re-flash the software "to a degree that the regulators deem acceptable".
VW faces investigations around the world, including from the US Justice Department - and could face up to $18 billion in US fines. The new disclosure about the V6 engines could add another $3.2 billion in fines.