r/audis5

Hey everyone,

For context this is my ‘21 S5 with 55k miles. I’ve owned this for about a year and a half, put about 10k miles on it since, and do not abuse it. Perfect service records leading up to my purchase with no failures. Water pump and thermostat still going strong. Not sure about previous owner, but I’ve been running 5W-40 every 5,000 miles and wait until it’s up to temp before pushing it.

I have been itching to go Stage 1 for some time now and decided to do my due diligence and scope the cylinders before doing so. Man, am I glad I did that. Luckily, cylinders 3 and 6 (pictured) were closest to BDC. Once I saw this, I didn’t even bother turning the engine and checking the other cylinders. The vertical scoring on the cylinders is unmistakable, right? Just wanted some more eyes on this.

I had no symptoms and no reason to believe that I had the dreaded piston skirt issue. During each oil change, I checked for glitter and metal particles in the filter and there was absolutely nothing. I even sent in an oil sample to Blackstone Laboratories, which came back clean. This goes to show that the only way to catch this issue early is to scope your cylinders. Like any car enthusiast, I am extremely paranoid with unusual noises in the engine bay and the loud EA839 with all its ticking does not help. I will leave a video in the comments I took about 6 months ago of what I suspected might be the piston slap on a cold start. It’s very subtle but perhaps you can hear the slower tempo, deeper sounding thuds drowned out by the injectors.

While I’m quite disappointed that I will not have my S5 for a bit, I’m eternally grateful that I did not tune without checking first, as that would’ve been an expensive mistake. I’ll be calling my dealership this week to get the ball rolling.

For those of you have been through this, I have a few questions.

1. What is being replaced these days? Short block or are they just replacing pistons now?

2. How long did it take?

3. Did you get a loaner while your vehicle was being serviced?

Thanks for reading and I hope this offers some insight for those still in warranty and haven’t gotten your cylinders checked. If you’re considering mods that would void your warranty, I would 100% get this done before proceeding. Once this is all over, I will definitely be going Stage 1 with peace of mind. Please feel free to leave your thoughts and offer any insight that I have missed.

Why are the rims not totally black on the optic black package? Anyone changed them out for black rims - what shape and satin or gloss?
Thank you!

Owned for a year and ready for my tune. 2018, 60k miles.

***24 hour update - bought it all alongside the IE carbon intake and inlet pipe. Thanks guys!

New to this group , was in a modified S3 before I picked this up .

Hey everyone,

I've recently picked up a new-to-me 2019 RS5. It looks like I'm missing a couple of inserts on the interior center console area. Does anyone happen to know the part numbers for what I'm missing by chance?

Thanks!

**Edit - Thanks for the help everyone! I found both parts. You guys are awesome!

So I’ve been in the market for an s5 cause I really would like to own one and have come across multiple decent 60-80k mile ones and some not.. I’ve done a bit of research on the rocker arm issues n all that good stuff and have been trying to stay away from 2018 s5s as while as too much high mileage in general.. but after carefully looking into this one with 98k miles.. the carfax is pretty unique. As the previous two owners have really taken care of it especially the latest one.. what do yall think.. so far he’s done two diff water pump replacements n a bunch of other useful maintenance.. pls would really like to get some insight on if this would be a decent purchase..

I’m replacing rocker arms on my 2018 audi s5 with the ea839 engine. I’m trying to get the engine to TDC point according to the manual, which the small hole on the pulley is at 0:00 and camshaft hole line with the case. But when i check the cylinder 1 (passenger side) with my screw driver, it is at BDC instead of TDC. Any explanation for this? Thank you

Got extreme vacuum on the oil cap and got a rough idle but burning only half a litre every 2k miles. Also when the oil filler cap is taken off the revs jump to 2k.

Any ideas what it could be?