Intelligence?

My 2015 CD 40,000miles with fix is also very problematic. It definitly has decreased power and sometimes has a lag of several seconds where the first few times it happened I thought the car had stalled then it lunges forward all the sudden. It’s very bizarre. I have also been averaging 18.8 mpg over the last week or so. I live in Philly with crazy traffic, but still my Jeep Wrangler that’s lifted averages about 15 on the same drives. SO the CD isn’t even that much better anymore. All this I could live with, but the biggest thing for me is a vibration in the steering wheel that goes with the engine clatter. It seems 3 times louder than it should at idle. Sounds fine while driving but man the idle in traffic is driving me nuts. Anyone else experiencing the loud idle and clatter?

Chriswit1

As I mentioned in previous texts, it very much depends on the type of driving you've been doing City stop/go or maybe more Hwy.
This is going to have a big effect on Carbon build up in the induction system ( EGR Valve, Swirl Flap and Manifold.), mine had serious blockage.
If you think about the weight Oil, these engines are required to use( 5W30), it's no wonder we get blow by and the then it's passed through the inlet system which intern becomes this Goohy Carbon mess.

The factory Oil Coalescing Valve/Filter built into the Valve cover is clearly over taxed, that's why I'm installing a Mann ProVent 200 CCV filter to help take care of this issue.

I still don't have my '14 CD back from the Dealer, can't seem to solve this Radiator Fan continuously running problem.
Porsche Canada has them trying some pretty weird reset manoeuvres.

i boight mine with the fix already. I had driven another one as a loaner pre fix with no vibration thru the wheel ar all.I read on a VW complaint board about Taureg drivers noticing a louder engine at idle with more vibration after the emissions flash and fix. My 2015 has the loud idle and vibration they describe to a T. There were also several people who reflashed the taureg 3.0 with an aftermarket tune, and the loud idle and vibration went away. Not sure why it only seems to affect some cars, and not all??? Another poster above mentioned buildup in the system. Maybe the cars with more buildup are affected more after the fix?? So maybe a good internal cleaning might help the idle vibration. Idk. But mine is at the dealer now. I couldn’t take the vibration as I drive in stop and go traffic for an hour each way to work. It really was getting on my nerves. I told them today Ill have to trade back the car for sometheing else if they can’t fix the vibrating. I’ll update and let you know what they can do about it.

Yes I strongly believe the build up is effecting everything after the fix!
One thing not mentioned so far is that the EGR is working a lot more, this will send even more burnt oily gases into the induction cycle.
The result is potentially less fresh air mixed into this cycle causing a terribly poor idle and bad efficiency.