AudiWorld Forums - A6 (C8 Platform) Discussion

Audi a6 C8 intermittent humming noise

Facko09 — Tue, 02 Jun 2026 23:27:24 GMT

Hello, I have an a6 C8 with 3D advanced b&o, I suffered minor damage in rear left side of the car, after that I am having these weird noises from the apparently back of the car, I have tried changing the amplifier but same thing is happening. Apparently the wiring is also not broken. This noise happens few minutes after starting the car last for 30ish seconds and stops and then again starts after 10ish minutes and goes like that.

Impact.

Click the link below
Here is the video for the humming sound

any help or guidance would be appreciated
thank you

Drive system malfunction!

Audi Logic — Thu, 28 May 2026 02:24:57 GMT

It was bound to happen one day and today was that day. I was practically home, cruising at around 45mph when I hear the beeps and a message saying RPM limited to 3500 rpm.
I made it home thankfully and I only felt a few stumbles which felt like a misfire. I checked the codes and found a P310B and P0087, both of which are fuel related but the car just doesn't
seem to be having fuel issues. I checked the battery voltage, and it was 11.8v and 58% charged which seems love to me. What do you guys think? Could it just be a failing batter?
I did restart the car, and it cranked right up with no malfunction. The battery is currently being charged, I'll check it again tomorrow.

Oil level indicator

ryegoryshev — Wed, 13 May 2026 21:25:05 GMT

Hello, I have a US-based 2024 A6 45 TFSI. When I open the oil level indicator screen in the service menu, I see no actual oil level - there is a grid with Min and Max, and that's it. Just a message underneath that the oil level is OK. There are multiple photos on the web that show the oil level as a green vertical bar within the range. Am I missing something?

2022 A6 avant 40 TFSI - clicking noise when turning under load

Avanticum123 — Tue, 05 May 2026 22:59:16 GMT

Hi all,

Looking for some guidance on a noise issue on a 2022 Audi A6 Avant 40 TFSI (C8). I�ve attached a couple of short videos�would really appreciate if you could listen and share your thoughts.

Symptoms:

- Fast, rhythmic clicking noise when turning

- Happens under acceleration/load (not noticeable when coasting)

- Frequency increases with speed

- Sounds like it�s coming from the front/undercarriage area

In the videos:

- The noise is clearest during turns under throttle

- You should be able to hear a rapid, repeating clicking that speeds up with wheel rotation

Additional observations:

- No warning lights on the dash

- No noticeable vibration through the steering wheel

- Not a single clunk � it�s a continuous

Context:

- Recently purchased from a non-Audi dealer

- No known accident history

- No visible damage to CV bush from underside of the car

Question:

Does this sound like a CV joint (likely front right outer), or are there other common causes on the C8 A6 I should check first?

Also�on these cars, is it better to replace just the joint or the full driveshaft?

Thanks in advance.

https://drive.google.com/drive/folde...usp=share_link