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Go Back   TDIClub Forums > TDI Model Specific Discussions Areas > VW Passat Family (NMS and B7) TDIs (2012+)

VW Passat Family (NMS and B7) TDIs (2012+) Discussion area for the 2012+ Passat TDI (North American and rest of world versions versions). The North American model was previously codenamed NMS (New Midsize Sedan) and the version the rest of the world gets is sometimes referred to as B7.

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Old June 25th, 2017, 00:08   #1
New Mickey
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Default The truth of Passat and urea injection?

Mine had it BEFORE the Phase 1 was done.

I've heard that the 2015 Passats all had urea injection from the factory, unlike the other models. And I've heard otherwise.

What is the truth?

-mickey
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Old June 25th, 2017, 00:19   #2
Trade Wind
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Passats all have AdBlue starting with the 2012 NMS. My 2012 has it.
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Old June 25th, 2017, 04:20   #3
Rico567
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Yes, that is correct, and all the 2015 TDIs had it (Passat, Jetta, Golf, etc.) 2012-2014 it was only the Passat, and maybe the Touareg, I'm not sure since I don't do SUVs. Our 2013 Passat has it, in fact I'm just about ready to refill the DEF tank....
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Old June 25th, 2017, 13:45   #4
compu_85
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All NMS Passat TDIs have urea injection, however from the factory the computer rarely turned it on...

-J
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Old June 25th, 2017, 13:52   #5
JSWTDI09
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Quote:
Originally Posted by New Mickey View Post
Mine had it BEFORE the Phase 1 was done.

I've heard that the 2015 Passats all had urea injection from the factory, unlike the other models. And I've heard otherwise.

What is the truth?
All Passat TDIs from 2012 on had adblue (urea) injection. The confusion probably stems from the fact that 2009 - 2014 Jetta and Golf TDIs did NOT use DEF injection. They used a different system - that apparently did not work well enough.

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Old June 25th, 2017, 15:05   #6
ZippyNH
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Quote:
Originally Posted by New Mickey View Post
Mine had it BEFORE the Phase 1 was done.
I've heard that the 2015 Passats all had urea injection from the factory, unlike the other models. And I've heard otherwise.
What is the truth?
-mickey
One more fact...
The 2015 has a different engine too....
Built to be used with SCR from the start.
The gen2 cars had the urea/DEF system bolted on....onto basically a gen1 motor.
Gen1 tried to do it with a LNT TRAP...used on some heavy duty trucks for a couple years... practice showed it had to Regen so often they negated much if the fuel sipping advantages of diesel....there was a similar emissions scandal with engine makers using LNT TRAP back in 2010-12....they were shutting off the Regen after about 200 miles...
So different tech even though the bodies of the car look similar...so the gen 2 and gen3 fixes and final level of allowed emissions are different as per the agreement with the EPA.
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