At what point (VW NOx EA189 emissions)

Johnmcl7

I suspect the cheat software was purely for the US market, the big difference between US and EU cars is that the US laws on NO2 are much stricter and it wasn't possible for some of the VW cars to pass the emission laws without the cheat as they lacked an SCR system.

EU laws have focused much more on CO2 than NOX and so it was possible for the EU cars to pass the test as unlike the US rival cars, other EU cars did not need an SCR system to pass. I can only guess that some stupid decision was made to carry on using the cheat software on EU cars rather than do it properly but while rival US cars do pass the emissions tests, most EU rival cars don't and some fail it far worse than the VW cars without the cheat software.

John

System

Hi

No real question.

But I am interested in the likely outcome, in as much as it could not be 'reversed' if there was a loss of power in the lower RPM range.

As to a class action suit, compensation, free work etc etc; well this is MSE and I would accept something towards lowering my annual motoring costs.

I feel a little cautious about this as a previous car, not VW, had an engine management update software change and then seemed to perform slightly worse on pulling away. The change was to improve the pulling power at higher revs apparently.

BeenThroughItAll

johndough wrote: »

Hi

No real question.

But I am interested in the likely outcome, in as much as it could not be 'reversed' if there was a loss of power in the lower RPM range.

As to a class action suit, compensation, free work etc etc; well this is MSE and I would accept something towards lowering my annual motoring costs.

I feel a little cautious about this as a previous car, not VW, had an engine management update software change and then seemed to perform slightly worse on pulling away. The change was to improve the pulling power at higher revs apparently.

Don't have it done then.

Johno100

BeenThroughItAll wrote: »

Don't have it done then.

Yep, it's not a safety recall and as long as VW can confirm it wont impact on the validity of any warranty remaining on the vehicle, then why have something done that may impact on performance?

BTW does anybody know if the motoring press have done any real world before and after tests of affected VAG vehicles to see what hit performance/MPG wise these vehicles take as a result of these various fixes?

[Deleted User]

gilbert_and_sullivan wrote: »

More to the point would you have bought the car when it wouldn't pull you out of bed until you get the revs up to about 2000rpm, which from all i read is what most people are finding after the work has been done, many wishing they'd refused.

Can't agree with that.


Having had the work done there is no difference before and after.


Cheers

Johno100

jeepjunkie wrote: »

Can't agree with that.

Having had the work done there is no difference before and after.

Cheers

Well that might be the case for you, your vehicle and the fix applied to it, but others are not having the same experience, have a read of this article and comments.

http://www.honestjohn.co.uk/news/volkswagen-emissions-scandal/8-reports-of-volkswagen-tiguans-losing-power-after-ea189-emissions-fix/

[Deleted User]

Johno100 wrote: »

Well that might be the case for you, your vehicle and the fix applied to it, but others are not having the same experience, have a read of this article and comments.

http://www.honestjohn.co.uk/news/volkswagen-emissions-scandal/8-reports-of-volkswagen-tiguans-losing-power-after-ea189-emissions-fix/

Oops, sorry, mines a 1.6 Golf BlueMotion, different engine...


I didn't want to say earlier but the car was also in for MOT & "major" service so if anything felt perkier after collection. Definately not sluggish. As yet can't see any diff in mpg.



Cheers

cb1979

My 2009 VW Jetta 2.0 140 DSG was due for its MOT on the 20th December, as I had a Hospital appointment that day I dropped it off at the Local VW Dealer


When I collected the Car I was informed they had carried out the software update as it was due


I was not too impressed they had carried this out without consulting me


I have driven the car quite a bit over the Christmas period and car drives well still and feels a bit smoother when the engine is cold, also did a bit of motorway and fuel consumption seems about the same


And yesterday I received the letter inviting me to take it in for the update

danielmac

Is your car still ok now. I'm in the middle of buying a car that's had the fix done but I've read some bad stories after fix

IamNotAllowedToUseMyName

It wouldn't surprise me if some of the performance loss was that people started looking for poor behaviour.

A lot of modern cars have a deliberately non-linear engine response. In fact if I go back to the 1.6 petrol engine in my 2002 Golf, there was very little engine response below 4000 revs, it was deliberately engineered for economy, but also to produce the power figures (and if you understood how to drive it, it was both economical and reasonably high performance).

I suspect people are having the mod done, then driving it looking for problems and finding them, not realising that was how the car worked before, they just hadn't noticed. No doubt there are other issues as well, and it can be that the engine management has been reset and hasn't yet optimised itself and people are judging on the drive out of the repair shop, rather than letting the management zero in on its proper settings.