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Dieselgate - VW Group Emission Scandal Discussion around the VW Dieselgate Emissions scandal. Details and news updates can be viewed here: http://forums.tdiclub.com/showthread.php?goto=newpost&t=448336 This forum is a work in progress depending on requirements, usage, etc.

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Old December 11th, 2017, 14:44   #46
dyehead
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Join Date: May 2017
Location: Los Angeles
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Update here:

'13 Q7 TDi Prestige currently back at the dealer. Audi of America asked me to bring it in after I called in a complaint.

Shop foreman took the car out with me this morning and acknowledged that it feels way worse, acceleration from slow speed/stopped has a ton of hesitation, it does not drive like it should.

They have the car and supposedly an official Audi engineer is being dispatched to look at the car and 'perform performance modifications.'

If they followed the standard procedure for applying the fix, I can't see how other people could not be experiencing this.

69k miles btw in case anyone is interested.
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Old December 11th, 2017, 16:59   #47
911c4fan
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Please keep us posted. That's pretty interesting. Might uncover some of the reasons some are suffering so much post compliance. I have had a 2013 and 2014 Q7 done with no noticeable reduction in performance. I really think the higher mileage the car, the more likely to have an issue. We will have to see if there is a correlation. Mine had 18,000 and 24,000 miles.
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Old December 12th, 2017, 06:28   #48
bhuizer
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I'm along the same lines, my 2014 Touareg feels pretty dang good yet. So I'm wondering if some vehicles are responding differently.
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Old December 13th, 2017, 08:56   #49
dyehead
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Latest status is.. they asked me what gas stations I fill up at... but when they asked they started rattling off Arco, Spirit, Valero (some of the cheaper stations)

(Chevron/76)

No comment after I told them, and haven't heard anything since yesterday.
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Old December 14th, 2017, 06:32   #50
bloc
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Quote:
Originally Posted by Nash_TDI View Post
Like somebody said before its not all about number which a dyno would show. A lot of it is driveability. Car may have peak power close to the same, but the area under the power curve is a lot smaller, or takes a LOT more throttle to get the same response.
I'm curious whether the dyno chart looks significantly different, implying different midrange torque/power.

Yes, it'd be difficult to get data on the change in part-throttle performance, but full-throttle data would be pretty easy to compare.

Even some before and after VCDS logs of boost pressure/throttle %/injector duration/injection time could help.. I didn't think to do it before the fix so I don't have a baseline.
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Old December 20th, 2017, 20:18   #51
Ddbass
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TDI(s): 2013 Q7 PP
Fuel Economy: ****ty, post fix
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2013 Q7 fixed last month.
I've gone from:
27 -> 23 highway
19 -> 14 around town
22 -> 17 average

Pretty upsetting
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Old December 21st, 2017, 07:36   #52
NJ Q7 TDI
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I am not a technical car person, but I do know how my car's drive feels. And a week post-fix, my 2013 Q7's power is way down. The rev of the engine sounds like my old Nissan CVT engine, where it's gunning, but not really going anywhere. And when I step off the gas, the car slows down much faster than before (to which my husband jokes that we'll need to change the brakes less often).
Needless to say, I'm not happy with the fix, and appreciate reading others' experiences to see if there's anything that can be done to help. The loaner non-TDI Q7 I had during the fix was much more fun to drive than my formerly-beloved TDI. :-(
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Old December 21st, 2017, 10:00   #53
bird67
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Quote:
Originally Posted by Ddbass View Post
2013 Q7 fixed last month.
I've gone from:
27 -> 23 highway
19 -> 14 around town
22 -> 17 average

Pretty upsetting
Can you share with us whether you've arrived at these numbers via calculation vs OBC? Some say the OBC values cannot be compared reliably pre- vs. post-fix. If your hand-calculated MPG is that terrible post-fix, that is seriously atrocious.
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Old December 21st, 2017, 17:01   #54
Ddbass
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TDI(s): 2013 Q7 PP
Fuel Economy: ****ty, post fix
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Yeah I've hand calculated my average at fill up. The highway and around town numbers are observations from the OBC, but the calculated average at fill-up bears them out.
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Old March 6th, 2018, 16:41   #55
JG321PM
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Update here:

'13 Q7 TDi Prestige currently back at the dealer. Audi of America asked me to bring it in after I called in a complaint.

Shop foreman took the car out with me this morning and acknowledged that it feels way worse, acceleration from slow speed/stopped has a ton of hesitation, it does not drive like it should.

They have the car and supposedly an official Audi engineer is being dispatched to look at the car and 'perform performance modifications.'

If they followed the standard procedure for applying the fix, I can't see how other people could not be experiencing this.

69k miles btw in case anyone is interested.


2014 Q7 Prestige Plus S Line TDI. Our Q7 is in the shop and they are telling me it has gasoline mixed in the fuel tank. This is supposedly causing the issue with the sudden starting and stopping hesitation at under 3,000 RPMs. I travel a lot and have always looked at fuel mileage. The Q7 is my wife's car and I noticed the hesitation and turbo lag increased drastically after the fix. She has always gotten 21-22 mpg around town in Atlanta. 26-30 mpg on the highway. Currently now we are at 18.5-19 mpg around town and 22-24 mpg on highway. I am like others, they got caught cheating one time what would stop them again. I am more unhappy with the vehicle now than ever. We owned a 2012 before and I complained when we got the 2014 that it got less than the 2012 in mpg and acceleration. Our Audi dealer in North Atlanta swears they never had a complaint on any of the fixed 3.0 Liter engines but after seeing the complaints on here along with others on the lurching, I feel like they are trying to blame the consumer. Now they want $700 to drain the tank and put a fuel filter in to see if that fixes the problem. Anyone else have any experience with this issue or had theirs fixed?
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Old March 6th, 2018, 16:42   #56
JG321PM
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Quote:
Originally Posted by JG321PM View Post
Update here:
'13 Q7 TDi Prestige currently back at the dealer. Audi of America asked me to bring it in after I called in a complaint.
Shop foreman took the car out with me this morning and acknowledged that it feels way worse, acceleration from slow speed/stopped has a ton of hesitation, it does not drive like it should.
They have the car and supposedly an official Audi engineer is being dispatched to look at the car and 'perform performance modifications.'
If they followed the standard procedure for applying the fix, I can't see how other people could not be experiencing this.
69k miles btw in case anyone is interested.
2014 Q7 Prestige Plus S Line TDI. Our Q7 is in the shop and they are telling me it has gasoline mixed in the fuel tank. This is supposedly causing the issue with the sudden starting and stopping hesitation at under 3,000 RPMs. I travel a lot and have always looked at fuel mileage. The Q7 is my wife's car and I noticed the hesitation and turbo lag increased drastically after the fix. She has always gotten 21-22 mpg around town in Atlanta. 26-30 mpg on the highway. Currently now we are at 18.5-19 mpg around town and 22-24 mpg on highway. I am like others, they got caught cheating one time what would stop them again. I am more unhappy with the vehicle now than ever. We owned a 2012 before and I complained when we got the 2014 that it got less than the 2012 in mpg and acceleration. Our Audi dealer in North Atlanta swears they never had a complaint on any of the fixed 3.0 Liter engines but after seeing the complaints on here along with others on the lurching, I feel like they are trying to blame the consumer. Now they want $700 to drain the tank and put a fuel filter in to see if that fixes the problem. Anyone else have any experience with this issue or had theirs fixed?
Quote:
Originally Posted by dyehead View Post
Update here:
'13 Q7 TDi Prestige currently back at the dealer. Audi of America asked me to bring it in after I called in a complaint.
Shop foreman took the car out with me this morning and acknowledged that it feels way worse, acceleration from slow speed/stopped has a ton of hesitation, it does not drive like it should.
They have the car and supposedly an official Audi engineer is being dispatched to look at the car and 'perform performance modifications.'
If they followed the standard procedure for applying the fix, I can't see how other people could not be experiencing this.
69k miles btw in case anyone is interested.

2014 Q7 Prestige Plus S Line TDI. Our Q7 is in the shop and they are telling me it has gasoline mixed in the fuel tank. This is supposedly causing the issue with the sudden starting and stopping hesitation at under 3,000 RPMs. I travel a lot and have always looked at fuel mileage. The Q7 is my wife's car and I noticed the hesitation and turbo lag increased drastically after the fix. She has always gotten 21-22 mpg around town in Atlanta. 26-30 mpg on the highway. Currently now we are at 18.5-19 mpg around town and 22-24 mpg on highway. I am like others, they got caught cheating one time what would stop them again. I am more unhappy with the vehicle now than ever. We owned a 2012 before and I complained when we got the 2014 that it got less than the 2012 in mpg and acceleration. Our Audi dealer in North Atlanta swears they never had a complaint on any of the fixed 3.0 Liter engines but after seeing the complaints on here along with others on the lurching, I feel like they are trying to blame the consumer. Now they want $700 to drain the tank and put a fuel filter in to see if that fixes the problem. Anyone else have any experience with this issue or had theirs fixed? 85,000 miles on our Q7
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