Volkswagen dieselgate scandal – 3.0 TDI V6 in VW, Audi and Porsche models possibly affected


It appears that the Volkswagen Group’s dieselgate woes continue to deepen. This is because the United States Environmental Protection Agency (EPA) has recently issued a second notice of violation (NOV) of the country’s Clean Air Act (CAA) to five companies under the Volkswagen Group banner.

Volkswagen AG, Volkswagen Group of America, Porsche AG, Porsche Cars North America, and Audi AG, have all been issued the NOV, which closely follows the same premise as the previous one issued back in September, alleging that Volkswagen developed and installed a defeat device on its diesel vehicles.

This time, it involves the Group’s 3.0 litre TDI V6 engine found in Volkswagen, Audi, and Porsche passenger vehicles for model years (MY) 2014 through 2016. As a short recap, the defeat devices (software in the electronic control module) enables the vehicle to sense when it is being tested for compliance with EPA emissions standards.

During that time, the vehicle engages measures to ensure that it meets the EPA’s emissions standards. However, once the test procedure is concluded, the vehicle will reconfigure itself back to a “normal” setting where nitrogen oxides (NOx) increase. In this instance, the 3.0 litre diesel engine is said to increase emissions of nitrogen oxide (NOx) up to nine times of the EPA’s standard.

The models affected are all sold in the US, and it is yet unknown if other markets will be involved as well. In the EPA’s NOV, it listed several SUV and sedan models including the 2014 Volkswagen Touareg, 2015 Porsche Cayenne, as well as the model year 2016 Audi A6 quattro, A7 quattro, A8, A8L, and Q5.

Both the EPA and the California Air Resources Board (CARB) have started investigations based on Volkswagen’s alleged actions. The NOV covers roughly 10,000 diesel passenger cars already sold in the US since model year 2014. However, the number of 2016 vehicles covered by the NOV has yet to be known.

Volkswagen has already responded to this latest allegation by emphasising that “no software has been installed in the 3.0 litre V6 diesel power units to alter emissions characteristics in a forbidden manner.” Volkswagen also stated that it will cooperate fully with the EPA to clarify this matter in its entirety.

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Gerard Lye

Originating from the corporate world with a background in finance and economics, Gerard’s strong love for cars led him to take the plunge into the automotive media industry. It was only then did he realise that there are more things to a car than just horsepower count.



  • VW has refuted firmly this time.

    Like or Dislike: Thumb up 12 Thumb down 1
    • Once Lie, Always Will Lie on Nov 03, 2015 at 1:46 pm

      Slowly the lies are coming out. More to come. The moral of this story is simple, stay away from VW group of cars. They have lied to many times already.

      Even Dieselgate, they lied for a whopping one full year before authorities prosecuted them.

      Even their DSG, they lied for over 5 years. In Malaysia, VGM is still lying about their DSG. Parent company in Germany say it has no cure, but VGM say, semua sudah OK.

      Please stay away from VW in Malaysia. You will regret all your life.

      Like or Dislike: Thumb up 7 Thumb down 5
      • timbuktu on Nov 03, 2015 at 3:21 pm

        Another copy and paste. Pathetic guy continuing to hump VW rather than his own wife. I wonder what VW did to this guy who doesn’t even own a VW.

        Like or Dislike: Thumb up 3 Thumb down 3
      • I wonder how many ppl here who complains about DSG actually owned a VW before, or is it just coffee shop hear say. Yea, there are teething problems with their DQ250 gear box, but that doesn’t mean every single product coming out of the VW production line is problematic. I also wonder if there are any proof that says its the heat in our tropical weather that is killing the DQ 250. It’s not like summer in Europe is cooler than our weather.

        Like or Dislike: Thumb up 3 Thumb down 0
      • timbuktu on Nov 05, 2015 at 10:32 am

        exactly. those whiners don’t understand that they are making a fool of themselves whining without much substance. i do agree there are issues with the dq250 but we need to realize there are 2 issues with it.

        First is the mechatronic issue which causes the gearbox to stall and car to lose power. VW issued a statement that the fully synthetic oil used in the mechatronic system isn’t suited for hot weather start stop condition. This is resolved with a change to mineral. My car got recalled to have this fix.

        The 2nd problem is clutch related which causes premature wearing and juddering when accelerating from slow speed. VW changed the rev of their clutch a couple of times and the latest Rev L seems to have addressed this issue. It’s yet to see how long it will last, but it has resolved the premature issues that was seen in earlier buyers.

        Now u see the 2 distinct issues here. The keyboard warriors a.k.a whiners mixed up the 2 issues, and kept humping VW on every article here. It’s pathetic and I don’t blame them mixing the issues coz they don’t even own a VW. Again, pathetic.

        Like or Dislike: Thumb up 0 Thumb down 0
  • kington on Nov 03, 2015 at 10:42 am

    Porsche, a brand i’ve been in love since i was a kid. Sigh….

    Like or Dislike: Thumb up 5 Thumb down 6
    • If this is the case, then it’s purely VW fault because the engines were supplied by the parent company. Porsche has always used petrol engines in all its variants – Cayenne being the first using Diesel engine to reach to wider market.
      Go for petrol 3.6 (based engine) Cayenne… Enough oomph to keep you smiling

      Like or Dislike: Thumb up 2 Thumb down 6
  • domainicus on Nov 03, 2015 at 11:02 am

    It goes on and on and on…….

    Like or Dislike: Thumb up 1 Thumb down 0
  • Cheater will never go far on Nov 03, 2015 at 3:55 pm

    VW tried very hard to sell their cars…but totally in a wrong way. Down sized the engine and add “turbo” then the install the defeating device…whats next, VW? VW is just very indecent…now we get to watch what happend to them for free. LOL thanks, VW

    Like or Dislike: Thumb up 1 Thumb down 1
  • nothing issue with defeat device…it;s not about performance or reliable just about emission…….

    Like or Dislike: Thumb up 0 Thumb down 0
    • Lol. The emission issue is just only happen in US, Malaysia will not affected. What for you keep on mention the case?

      Like or Dislike: Thumb up 0 Thumb down 0

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