r/AudiRS3

Just got my new diffuser and front lip fitted.

Parts are from CT Carbon in case you want to order them aswell.

Hello! Super exited to be here!

Recently installed the 458 designs resonated & valved cat-back exhaust with Hemholtz Anti-drone & midpipes. Thing is a work of art, genuinely some of the best welds I’ve ever seen. Shits on every exhaust I’ve seen at the same price point and many that are much more.

As someone who had an awe switchpath for awhile on my previous car, it’s pretty crazy how much better this is. With valves fully open the level of sound is very similar, thought the 458 sounds a bit more exotic and less buzzy.

However, the really big difference is that with the valves closed it’s actually very quiet, pretty much the same as stock exhaust in “pronounced” mode, and there’s essentially zero drone at any speed in any valve setting. Whereas AWE was quite bad at highway speeds in any valve setting.

11mode controller is a must though, as Audis valve logic is ridiculous and without a controller you pretty much never actually get them fully open even in RS performance mode.

@rs.8y5

Hi All! SavageGeese have just released a new review of the 8.5Y RS3.

Definitely worth a watch with some interesting comparisons and observations.

Enjoy! https://www.youtube.com/watch?v=J5VsCieqMDY

Anyone know the weight of these wheels, they look heavier than previous models. However euro price says they are 6 lbs lighter?

Hello guys I have this issue been to multiple mechanics no one can figure out what it is luft has been checked car was lifted and no noise or nothing while its lifted only on the ground. When I reverse sometimes it goes like pop pop pop pop. There is constant vibrations from the rear wheels on low rpm. That noise also appears when I go over speed bump sometimes its the same pop pop pop but its so fast like 6-7 times a second. Also happens if I go uphil low rpm. Here Ill share a video I never manage to get it excatly on a video but I have something close enough. The noise also appears sometimes only under the right angle when I press the gas pedal and the car starts moving and I lift my foot off again quickly. Ill be glad if someone can help.

So I just got this car brand new 2 weeks ago. This is my second wash and I noticed after backing it back into the driveway, there was what appeared to be vapor coming out of this area. Didn’t last long, probably 10 seconds after the car was shut off. I did a drive for 10 minutes afterwards and there was no smoke/vapor then.

Trying to reach the dealership but they’re all pretty much closed in my area so I’m curious if the water just got somewhere hot?

Hey yall,

I found a used rs3 8v that I simply couldn’t pass on, I will pick up the car in a few weeks.

However, the one thing it is missing is the b&o system. I come from a mini f56 with the harman kardon and it was decent. I like a good bass and listen primarily to deep house and hip hop.

I believe my configuration is the middle Audi sound system, not the worse base speakers, but also not the b&o.

Getting a bit lost in the aftermarket options to upgrade and improve the audio sound system.

Between DSP, tuning, speaker replacement, I’m not too sure what to do. Obviously don’t want to spend a fortune on it either.

If anyone did an upgrade, some guidance would be highly appreciated!

I’m so happy I got my hands on 2025 rs3. I’ve got warranty on it but I want to do some mods to make it louder which won’t void the warranty. Is there anything I can do?

Sold my 2018 S3 and moved into this 2026 RS3. Unfortunately, had a trip planned for the day after purchase so I haven't been able to drive it outside of test drive.

Engine knocking under partial throttle load, when checking logs and knock sensor no spikes detected (0.75v on cylinders 1-5 max)

Oil pressure under idle and load isn’t low or high (33-36psi at idle) and (55-67 max under load and driving conditions in either city or highway)

When driving near walls or enclosed garages the knock can only be heard at certain throttle inputs between 10-20% throttle and around 1800-2200 RPM, above 4k it’s hard to hear noise as Catless and open air intake so it’s sucking noises and vroom sounds no wastegate rattle as that seems to be coded out very well with latest Uni flash

Currently stock block 77k miles with Uni stage 3BT and TCU tune running IMS750HS no ethanol but flex capable, 93 shell pump gas and all Uni recommend supporting mods besides Iroz LPFP and built bottom end.

Video uploaded of both upper and lower noise, the whine in the first clip is alternator pulley, listen for knock about halfway through

I’ve refreshed the data manually (by pulling down on the main page)

I’ve confirmed everything is closed as it is correctly detecting, and I’ve tried by removing the key user and then re-enabling. I’ve also restarted the MMI by holding down on the volume power button for 15s.

It was working up until a few days ago… 2026 RS3.

Been about a week. Love it so much. All around firecracker but still subtle.

Coming from a Mazdaspeed 3 the awd feel so good, you feel so confident off the line and in the wet. So easy to absolute blitz people off the light while not even trying. It’s also nice the wife can drive it in an emergency or something.

Has a few things to be fixed but otherwise, a gem i hope I’ll never part with.