VW reportedly closing in on 30 liter diesel fix
Volkswagen is zeroing in on a technical solution for some 85,000 Porsche, Audi and VW vehicles, Bloomberg reports.
In early November of last year the EPA cited a group of vehicles with 3.0-liter TDI engines as containing defeat devices, including the Audi A7, A7, A8, Q5, Q7, Porsche Cayenne Diesel and VW Touareg models. The Notice of Violation came weeks after the 2.0-liter diesel engines were exposed as containing emissions-cheating software. While VW was able to come up with a software fix for these diesels in Europe fairly quickly, a technical solution that would be approved by the EPA has remained elusive.
Bloomberg now reports that the automaker is finalizing technical details of a fix for this batch of vehicles, and is carrying out testing to make sure the software upgrade works.
The issue with the 3.0-liter diesels differs from cars equipped with the 2.0-liter TDI I-4; VW has indicated the larger engines use a catalyst warmup technique that was not disclosed to the EPA, simpler to bring into compliance. A new catalytic converter could be part of the fix, which is still expected to include a software upgrade.
Even though the issue of the 3.0-liter diesels is distinct from the much larger problem of emissions-cheating software in some 482,000 2.0-liter TDI engines, a recall campaign is still tied to the settlement that VW is expected to sign with U.S. regulators at the end of June. The automaker has reached a deal “in principle” with the EPA and CARB in regards to 2.0-liter diesels, as announced in U.S. district court last month, but the agreement does not address 3.0-liter engines. The issue was set aside by the court.
For now, the deal reached with regulators does not include an option for owners of the larger diesels to sell back their vehicles to VW.