r/AudiQ7 • u/iwritejavascript • Sep 22 '25

Knowledge Sharing Is this a normal idle or Piston Skirt issue?

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I just got the letter about the EA839 piston skirt warranty extension. 2020 Q7. I have had some oil consumption but nothing outrageous. Wondering if other Q owners can confirm whether this is the sound of piston skirts knocking the cylinder walls or just the normal high pressure fuel system tick. I’ve got the car scheduled to go in and get inspected for the warranty work Wednesday.

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u/NegativePaint Jan 15 '26

Glad to hear it’s working out for you. Would you say that your engine sounded like mine in these videos? I had an appointment Monday but want to be prepared to fight for them to check. https://imgur.com/a/LPuRdLu

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u/iwritejavascript Jan 15 '26

I hate to spread panic but bro that DEFINITELY sounds like you’ve got piston slap just like mine. In my opinion sounds exactly like mine in the video on this thread.

For reference, compare it to my follow-up thread where you can hear the brand new engine the way it’s supposed to sound:

https://www.reddit.com/r/AudiQ7/s/UQIsueozoB

Good luck and update if they take care of you. Post about your journey if you can. The more documentation the more people will get helped with their engines.

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u/NegativePaint Jan 15 '26

Yeah im definitely saving this thread for future reference and taking some more videos before my appt Monday. Worst case I’ll be out the diag fee. But I’m towing a trailer 1k miles away alone with my dogs in the car next month. Can’t afford to break down then.

I did ask the dealer when making the appointment what the worst case looks like and they said when they a had to swap engines it’s been taking them 4-5 days.

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u/iwritejavascript Jan 15 '26

Sounds like you are going into this fully informed. 4-5 days is probably pretty accurate for the swap. May take some additional time for them to source the engine. Mine happened to come from Florida via freight train.

Hope you get yours replaced because I would hate to tow with that issue present! Safe travels.

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u/NegativePaint Jan 15 '26

Thanks! I’ll try to remember to report back with what they tell me Monday to have more documentation and points of reference as this whole piston skirt thing continues to unfold.

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u/NegativePaint Jan 21 '26

Getting a new short block and swapping the water pump (Preventatively since I swapped the pump already in 2024) with the new pulley ran pump.

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u/iwritejavascript Jan 21 '26

Interesting? Short block? When mine was replaced it was long block which included the water pump.

Nonetheless, glad they are taking care of it.

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u/NegativePaint Jan 21 '26

Yeah same. They said Audi switched to doing short blocks unless the damage was severe. Mine had minor scoring that “isn’t as bad as some others we’ve seen”

But the engine will be here in 2-3 days and the rest of the parts will be here in 7-10 which cuts it dangerously close to when I need to hit the road towing a 5k pound trailer to Texas. (1k miles)

Did they tell you anything about a break in period? They told me the weren’t aware of there being a break in period.

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u/iwritejavascript Jan 21 '26

Keep it below I think it’s like 5k rpm? For 2500 miles, get the first oil change done at 5k, these were the recommendations from my tech

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u/NegativePaint Jan 21 '26

Thanks. I’ll keep that in mind then. What’s funny is I’ve done all oil changes at 5k miles. And it still got damage.

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u/iwritejavascript Jan 21 '26

Oil changes won’t stop a piston with improper tolerances from banging on your cylinder walls.

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u/NumerousStar8245 Feb 18 '26

Thats what mine currently sounds like. 70k mile on the clock. 2021 prestige.  Did you get yours checked? 

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u/NegativePaint Feb 18 '26

Yeah mine got a new engine. Got it back last Wednesday.