2019 S5 51k miles needs engine replacement

**shane12286** · 06-08-2023 08:43 AM

Hi all.

I've had my 2019 S5 since 4k miles. Has IE tune, downpipe, intercooler and all the bolt-ons.
Started misfiring last week and I brought it in. One spark plug was destroyed and #6 cyl. was at 40psi with lots of scoring of the cylinder wall.

It's 1k miles out of warranty. Dealership said Audi would probably work with us on cost of engine replacement if it was stock. So, I think I'm SOL there. Trying to determine all my options. Has anyone else dealt with this or have any advice?

Thank you!

**Visceral1** · 06-08-2023 10:30 AM

Did anyone explain how this happened? It seems rare to read about this sort of thing. Did you take the tune off before bringing it in or no?

**shane12286** · 06-08-2023 11:51 AM

I'm going to talk with the shop more later today to see if they have any ideas. I brought it to a Euro specific auto shop in the area, not to the dealership yet. So, the tune was still on. Along with all bolt-ons.

**VVG** · 06-09-2023 02:25 PM

Originally Posted by shane12286

Hi all.

I've had my 2019 S5 since 4k miles. Has IE tune, downpipe, intercooler and all the bolt-ons.
Started misfiring last week and I brought it in. One spark plug was destroyed and #6 cyl. was at 40psi with lots of scoring of the cylinder wall.

It's 1k miles out of warranty. Dealership said Audi would probably work with us on cost of engine replacement if it was stock. So, I think I'm SOL there. Trying to determine all my options. Has anyone else dealt with this or have any advice?

Thank you!

Sorry to hear this, but you would likely be paying for this out of pocket irrespective of the mileage. I seriously doubt Audi would have covered this under warranty even if you were under 50,000 miles. Now...if you have owned like 10 Audis, and you were stock, then maybe they would do you a favor and cover it, but tuned...no way. I am curious about a few things however. Why did you choose this company for your tuning when there are companies like APR, ABT, MTM who have a long history of reliable tuning with Audi? What level of tune was this? Did you have all the right equipment to meet the fueling, ignition, and cooling needs of the tuned motor?

**kngfisher** · 06-09-2023 08:55 PM

My 09 stasis turned a4 did the same thing at about the same mileage. I ended up replacing the engine with one from a 2011 that had 30k on it. Was not probably worth it but wanted to keep the car. It’s up to you but being turned it’s the risk of the owner. Maybe find a used engine and get it built to handle more power.

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**SHCKR** · 06-10-2023 03:26 AM

Original spark plugs?

**Mugatu** · 06-10-2023 01:16 PM

Originally Posted by VVG

Why did you choose this company for your tuning when there are companies like APR, ABT, MTM who have a long history of reliable tuning with Audi? What level of tune was this? Did you have all the right equipment to meet the fueling, ignition, and cooling needs of the tuned motor?

Not sure I would be implying that Integrated Engineering is not a trust worthy, reliable tuning option. They've been around for years and have dedicated themselves to Audi/VW.

**Kerbouchard** · 06-11-2023 08:20 PM

Agreed, Mugatu. If I had to guess, I’d say 70%+ of the tuned b9’s on here are running IE or 034…

Doesn’t mean those tunes are perfect, but it’s a widely used and respected tuner here on the board.

OP, have you talked with IE yet? I’m sure they’d be very curious to get some feedback, logs, etc from you.

**shane12286** · 06-12-2023 05:46 AM

Originally Posted by SHCKR

Original spark plugs?

Spark plugs were changed out at Audi under warranty maintenance at 45k

**shane12286** · 06-12-2023 05:48 AM

True.

I had APR on last S4 and had this car tuned via APR for about a year. Switched to IE because I liked being able to change tune level myself. I had stage 2 91. Have intercooler, downpipe etc. All their required mods for that tune.

**shane12286** · 06-12-2023 05:50 AM

Yeah, this is likely what I'll end up doing. Thanks!

- - - Updated - - -

Yeah, I reached out to IE but they didn't seem to interested in the details.

**Dan99** · 06-12-2023 07:24 AM

Originally Posted by shane12286

...One spark plug was destroyed and #6 cyl. was at 40psi with lots of scoring of the cylinder wall.

Tuned or not, has someone explained what led to trashing the spark plug, a loss of compression, and scoring of the cylinder wall?

**shane12286** · 06-12-2023 07:34 AM

Originally Posted by Dan99

Tuned or not, has someone explained what led to trashing the spark plug, a loss of compression, and scoring of the cylinder wall?

They're not sure exactly. Think it could be manufacturer defect or poor fuel, but I always run BP 93 and have never had any issues.

**Gregory_Tolson** · 06-12-2023 08:37 AM

you would assume the damage was caused by a starvation of oil. Is the spark plug physically damaged? Are valves damaged?

**ontunerow** · 06-12-2023 08:40 AM

Any pictures you can share when spark plugs etc. were examined?

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**JohnEnglish** · 06-12-2023 09:35 AM

Originally Posted by Gregory_Tolson

you would assume the damage was caused by a starvation of oil. Is the spark plug physically damaged? Are valves damaged?

It's rare, but I've seen engines where a sparkplug failed and broke apart in the cylinder.

**Dan99** · 06-12-2023 10:20 AM

Originally Posted by shane12286

They're not sure exactly. Think it could be manufacturer defect or poor fuel, but I always run BP 93 and have never had any issues.

A loss of compression means something broke, such as rings, valves, head gasket, crack in a piston or the block. I'm not sure how poor fuel could cause this type of failure unless the wrong octane got into the gas tank and you experienced premature detonation/spark knock (which can damage an engine).

**shane12286** · 06-12-2023 12:21 PM

sparkplug:
https://imgur.com/a/NJhFoy2
https://imgur.com/9SGYIGk
https://imgur.com/nAENCyO
https://imgur.com/WddbVKb

**Kerbouchard** · 06-12-2023 07:29 PM

Not to suggest to air all the dirty laundry, but there are more than a few of us out here that would be pretty concerned if IE didn’t engage here I think? I’ve been using them for years with no issues on my other Audi, but haven’t pulled the trigger for my B9 yet.

**tgelston** · 06-12-2023 08:01 PM

What are you going to do? Replace the engine? I also need an engine swap and Audi is quoting $25.6K for my 2018 S5 Sportback.... I think I'll sell it as a potential project car / part out car for that money...... Thoughts?

**JohnEnglish** · 06-12-2023 09:02 PM

Originally Posted by Kerbouchard

Not to suggest to air all the dirty laundry, but there are more than a few of us out here that would be pretty concerned if IE didn’t engage here I think? I’ve been using them for years with no issues on my other Audi, but haven’t pulled the trigger for my B9 yet.

Why? Rocker arm failure is a rare but known issue that has happened to tuned and stock cars.

**shane12286** · 06-13-2023 08:21 AM

Originally Posted by tgelston

What are you going to do? Replace the engine? I also need an engine swap and Audi is quoting $25.6K for my 2018 S5 Sportback.... I think I'll sell it as a potential project car / part out car for that money...... Thoughts?

Yeah, I got quote for 27k for new engine. Got rough estimate for 15k for used engine replaced. That's probably what I'll end up doing. Had a 5 second thought of swapping it for a 4.0t from RS7, but not something I want to get into at this time. Will likely get it replaced and run it for a bit and sell it.

**Visceral1** · 06-14-2023 07:25 AM

I am really interested to understand what happened to cause the failure... Do you intend to find out? Sounds like you are going down the path of replacing without knowing how all this fell apart. Lemme no,

**shane12286** · 06-14-2023 01:11 PM

Originally Posted by Visceral1

I am really interested to understand what happened to cause the failure... Do you intend to find out? Sounds like you are going down the path of replacing without knowing how all this fell apart. Lemme no,

They think it was manufacturer defect. But I'll bet getting a second opinion as I'm bringing it to a different shop for the replacement. I want to know as well... but I'm not going to get any warranty or help from Audi if I do find out. So it is what it is I suppose.

**zac3707** · 06-15-2023 05:12 AM

Originally Posted by shane12286

They think it was manufacturer defect. But I'll bet getting a second opinion as I'm bringing it to a different shop for the replacement. I want to know as well... but I'm not going to get any warranty or help from Audi if I do find out. So it is what it is I suppose.

If you can prove manufacturer defect, why wouldn't Audi help you?