In a letter posted by the EPA, the agencies said they approved VW’s proposed emissions modifications for diesel variants of the 2012-14 Passat, but only those with automatic transmissions; stick-shift Passats were also sold, but such variants remain unapproved because a fix could not be applied “without negatively affecting important consumer attributes, such as vehicle durability and reliability,” according to the letter. VW is “reassessing its proposed emissions modification for the manual transmission versions,” the letter added.
Volkswagen remains obligated to maintain continued compliance and other regulatory requirements, the letter said. The automaker has 10 days to provide owners with a notification that a fix is available.
The Passat models in question have the second generation of VW’s diesel four-cylinder engines at the heart of the scandal. In an emailed statement to Cars.com, Volkswagen said it’s “pleased that it has received regulatory approval to offer affected customers in the United States an approved emissions modification for 84,391 Generation 2, 2.0-liter TDI vehicles with automatic transmissions, all of which are model-year 2012-14 Passat vehicles. Eligible customers will be notified that they can receive a modification free of charge at their preferred dealership if they want to keep their vehicles.”
Full details of the fix remain unclear. When asked, spokespeople from the EPA and VW did not provide further comment.
Regulators approved a fix for newer third-generation diesels in January, but the older first-generation diesels still lack a remedy. Those engines — EA189 diesel four-cylinders with an exhaust-treatment filter to remove pollutants instead of the fluid treatment — span a slew of 2009-14 Volkswagen and Audi models (Audi is a VW Group brand) and account for about three-fourths of the nearly 600,000 diesel four-cylinders involved in the scandal. Separately, some 80,000 diesel V-6s are also involved.
Updated 5/19/17: Volkswagen spokeswoman Jeannine Ginivan told Cars.com the fix involves a software change so emissions controls function effectively during “all typical vehicle operation.” It should take about an hour at the dealership, but customer guides are still pending