BRUSSELS (Reuters) -- The European Commission today said it quickly wanted clarity on the full extent of diesel emissions cheating by Volkswagen Group, the day after U.S. regulators widened its probe to include engines used in some larger Audi and Porsche models.
The Commission, the EU's executive arm, has invited all EU countries that approved VW Group cars as conforming to European type approval law to carry out the necessary investigations and report back.
"We want clarity fast, but it is equally important to have the complete picture," Commission spokeswoman Lucia Caudet said in a statement.
The U.S. Environmental Protection Authority (EPA) said on Monday that more than 10,000 VW Group vehicles in the U.S. have been found with illegal software that masked higher emissions than allowed by law.
The EPA said its testing found some 2014-2016 VW, Audi and Porsche models with 3.0-liter engines have equipment to alter turn off emissions systems when they are being driven on actual roads and not in the testing lab. Without cheating, it said the emissions of toxic nitrogen oxide from the vehicles were up to nine times EPA's standard.
Previously, VW emissions scandal in the U.S. had been limited to VW and Audi vehicles with 2.0-liter diesel engines.
The EPA issued a new Notice of Violation to VW, Audi and Porsche saying that the 2014 VW Touareg, 2015 Porsche Cayenne and 2016 Audi A6 Quattro, A7 Quattro, A8, A8L and Q5 crossover with 3.0-liter diesel engines contained illegal software.
It was not immediately clear how many of the 3.0-liter diesel engines for the identified years were sold worldwide.
VW said on Monday that no software was installed in its 3.0-liter V6 diesel engines "to alter emissions characteristics in a forbidden manner."
Bloomberg contributed to this report