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4.0TT Turbo Failure Thread - S6 S7 RS7 A8 S8

A8 / S8 (D4 Platform) Discussion Discussion Forum for the D4 Audi A8 Produced from 2010-2017 Audi S8 produced from 2012-2017
View Poll Results: 4.0TT Have your turbos blown yet?
2013 - NO
24
27.27%
2013 - YES
9
10.23%
2014 - NO
13
14.77%
2014 - YES
5
5.68%
2015 - NO
13
14.77%
2015 - YES
2
2.27%
2016 - NO
13
14.77%
2016 - YES
0
0%
2017 - NO
8
9.09%
2017 - YES
1
1.14%
Voters: 88. You may not vote on this poll

4.0TT Turbo Failure Thread - S6 S7 RS7 A8 S8

 
Old 02-05-2019, 05:24 AM
  #11  
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$960 for turbo cores. Shipped from china very fast. And quality was good.
$80 for v clamps holding the turbos on exhaust. Audi would not tell you about these. It is a vw item. I have the part number if anyone needs it
$25 for o ring seals for oil and water lines on the turbo. Strongly recommend replacing them.
And 4-5 hours work.
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Old 02-05-2019, 05:33 AM
  #12  
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Originally Posted by Eric Potter View Post
I didnít know this was a common problem until I just looked it up this morning. Iím guessing AOA is Audi of America?
Just sent a text to the dealership and they said the screen could be the problem but not sure yet because they havenít taken out the turbos yet. He did say that over the past year he has seen at least 20 of these engines with the same problem and usually due to that screen being clogged. Thatís just the Grand Rapids area so must be a lot of problems around the country with this.
I love the car but this is the reason I am going with a 2017 Q7... and more space for more toys.

Originally Posted by Dorelian View Post
$960 for turbo cores. Shipped from china very fast. And quality was good.
$80 for v clamps holding the turbos on exhaust. Audi would not tell you about these. It is a vw item. I have the part number if anyone needs it
$25 for o ring seals for oil and water lines on the turbo. Strongly recommend replacing them.
And 4-5 hours work.
I'm guessing you DIY. I would assume more hours of labor through a shop? Probably something like ~$750 in labor I would guess.
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Old 02-05-2019, 05:39 AM
  #13  
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Originally Posted by Dorelian View Post
$960 for turbo cores. Shipped from china very fast. And quality was good.
So those were not genuine Audi parts?
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Old 02-05-2019, 05:54 AM
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Originally Posted by mhoran89 View Post
2014 A8 that I picked up in May of 17 with just short of 19k on the odometer.
I have done regular oil changes sooner than 10k (maybe average out to 7k).
No turbo issues to speak of and the car has over 56k now and no evidence the screen was ever done before I took delivery of the vehicle.
The car was tuned with APR Stage 1 software fairly soon after getting it, run on 100 octane a bunch of times, and been down the drag strip in 1/4 mile passes.
Unfortunately the reports of failures has me spooked. On Friday I locked down a 2017 Q7. I should be picking it up later this week. Happy to be staying in the Audi Family!
I am spooked as well with all these turbo failure reports. I just purchased my S8 at end of September last year. 75,000 miles on it. Runs perfect other than the 1k/3k vibration issue due to downpipes and I also think I need my sway bars done (another known issue with this car). I am not going to wait for my turbos to fail. I am lining up to have the oil separator, oil screen, and check valve all replaced as preventative maintenance. Until that is done I am driving the car sparingly. I will be changing oil at least every 5,000 miles after that. I just did an engine flush with liquimoly so I am concerned that may have loosened carbon particles and further blocked the restrictive screen. I will report back with pictures after the work is done. I am interested to see condition of turbos and oil screen. The factory oil screen apparently has been updated to allow more flow. Hopefully that fixes the issue.
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Old 02-05-2019, 05:59 AM
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My car is a 3.0T but a co-worker has a 2013 4.0T and received a letter from Audi extending the warranty on the turbochargers.
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Old 02-05-2019, 06:04 AM
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Originally Posted by mhoran89 View Post
I love the car but this is the reason I am going with a 2017 Q7... and more space for more toys.
I hear you on this... Perhaps if I did more research before I purchased the car, I may not have gone through with it. However, I saw her and fell in love immediately. Then like a drunken night in Vegas, I woke up badly hung over and she was in my garage. Now that the honeymoon is over, I am finding she has some serious issues that need to be addressed. I guess that's the good thing about cars, you can fix the issues whereas with people, we are pretty much who we are. After those issues are fixed, I am hoping we will have a long happy life together.
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Old 02-05-2019, 06:08 AM
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Originally Posted by porboy44 View Post
My car is a 3.0T but a co-worker has a 2013 4.0T and received a letter from Audi extending the warranty on the turbochargers.
First I have heard of this... Has anyone else gotten this letter???
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Old 02-05-2019, 06:53 AM
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Originally Posted by spdemon91 View Post
I hear you on this... Perhaps if I did more research before I purchased the car, I may not have gone through with it. However, I saw her and fell in love immediately. Then like a drunken night in Vegas, I woke up badly hung over and she was in my garage. Now that the honeymoon is over, I am finding she has some serious issues that need to be addressed. I guess that's the good thing about cars, you can fix the issues whereas with people, we are pretty much who we are. After those issues are fixed, I am hoping we will have a long happy life together.
These motors are incredible and one of the big reasons to go with the 4.0TT was driving a 2016 S6 that my dad had; plus the build quality of the interior is second to none. Unless going with a total bespoke handmade car (bently, aston martin, rolls, etc.) One thing I always found annoying was the lack of technicians that could work on this level of vehicles. One or two per dealership and it felt like the smallest thing was always a production. But that's what you get for daily driving a $112k extended wheelbase limo...
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Old 02-05-2019, 06:54 AM
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Originally Posted by spdemon91 View Post
First I have heard of this... Has anyone else gotten this letter???
Same here, more details on this would help a lot of folks. See if you can get a pic of any paperwork your coworker has...
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Old 02-05-2019, 07:10 AM
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Just a thought... is it worth it to post a link to this thread in the C7 - S6, S7, & RS7 sections?
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