I'm pretty sure the 2015's fix was software only but 2012-2014 NMS is phase I software to be followed by a phase II hardware (and software too?) fix. There is some information on this in the Dieselgate sub-forum here. I believe the phase II hardware was approved and is starting to be released to dealers but AFAIK nobody has reported doing phase II yet which would include how it affected the driveability and fuel economy. Hopefully someone with more knowledge than I will chime in on this.
200k mile question
- Thread starter russdawg24
- Start date
Blue_Hen_TDI
Top Post Dawg
The Phase I fix is software only. I’m getting 56.0 mpg since the fix; admittedly, my driving style is not typical, as I use my car for commuting only/no short trips or grocery-getting.
russdawg24
Active member
And there has been no Phase 2 solution yet then... correct?
There are so many different things out there per model/year it's confusing.... I might just call my dealer with my vin and ask them what the deal is haha.
Blue_Hen_TDI
Top Post Dawg
According to the Phase 2 thread, it was recently (as in this month) approved and dealers are just starting to book appointments. I have not yet been notified.
my post fix MPG's are all over the board, it seems as if the programing is tuned to keep the exhaust hot, whenever I drive threw rain or cold temps my MPG's drop into the low 30's but rebound up to 45MPG on a nice 70+F day