Volkswagen Group Submits Its Proposed Fix for V6 TDI Engines to US Regulators

Volkswagen V6 TDI engine 1 photo
Photo: Volkswagen of America
Volkswagen Group’s American Division submitted its proposed plan to recall and repair the V6 TDI engines affected by the Dieselgate situation.
Yesterday was the deadline for Volkswagen to present a proposed fix for its V6 TDI engines. Unlike its proposition for the 2.0-liter TDI engines, the repair for the 3.0-liter V6 TDI units was not published. Furthermore, no details of this plan were released.

As most of you already know, the California Air Resources Board and the Environmental Protection Agency discovered in November that the 3.0-liter V6 TDI engines used by Audi, Porsche, and Volkswagen models made since 2009 used three emission control systems that were undisclosed, Automotive News informs.

Lab tests revealed that one of these systems was the now infamous “defeat device,” designed to trick emission tests by employing a more Eco-friendly running mode during testing. Naturally, the affected cars were “trained” to figure out when they were being tested so they would not have to run in this mode for a long time.

However, we know for sure that the Volkswagen Group has pledged to fully cooperate with US authorities on finding a fix for its diesel engines.

The officials at Audi, the brand responsible for the development of the 3.0-liter V6 TDI unit, will revise the emission control software. After all, one of three emission systems of the 3.0-liter V6 TDI unit is under scrutiny, so two should be changed while the third is eliminated.

Since the unit is used by Volkswagen, Porsche, and Audi, the three emission systems could refer to the three versions of the same power plant, which would imply that not all V6 TDI units made after 2009 are affected.

Either way, the fix for the V6 TDI engines could not involve only software changes, but we cannot know for sure until the proposition is published. According to regulators, around 85,000 vehicles sold in the United States of America are fitted with affected V6 TDI engines.
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About the author: Sebastian Toma
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Sebastian's love for cars began at a young age. Little did he know that a career would emerge from this passion (and that it would not, sadly, involve being a professional racecar driver). In over fourteen years, he got behind the wheel of several hundred vehicles and in the offices of the most important car publications in his homeland.
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