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Rusty brake disc

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December 6, 2025Dec 6

I have a 2025 A3 the rear near side disc has been rusty since collection.I took the car back for attention they drove up and down hammering the brakes which partly cleared rust but it returned within 2 weeks anybody had similar problems.

December 6, 2025Dec 6

If that is the only disc that rusts then the brake caliper is not working properly. Get it sorted out before the guarantee expires.

1 month later...

January 23Jan 23

Author

Both rear discs and pads have been changed under warranty.

January 23Jan 23

Glad to hear it.

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Ai the mechanic?
Audi A4 (B7) Forum

Ai the mechanic?

Bedders · May 27May 27

HI All, Can you help? My faithful and reliable twenty year old A4 2.0 TDI has developed a few issues. Lack of power in cruise mode going up hills and major juddering when I am lead footed (not often, but when i need to get out of trouble) which causes the engine to vibrate and judder. The car has full Audi servicing for the first 16 years of its life and more recently local garages in the last fours years and has 126,000 miles on the clock. ( i bought it for long distance driving but was made r
- 8 replies
- 591 views
Bedders

May 27May 27

Bedders

5 hours ago5 hr
Hydraulic whine when low speed engine idle a/c on
Audi A6 (C8) Forum

Hydraulic whine when low speed engine idle a/c on

Optimus · 8 hours ago8 hr

I’d thought I’d check in on this as my tdi 40 is now coming up to 3 years old. My a/c is always on during summer without fail. This is the first time I’ve ever heard this, this loud. I normally can mainly hear it in the cabin when turning steering wheel on full lock, you know that a/c moan/groan sound. it sounds like the condenser fan blowing, picks up pitch and rhythm with rev counter. So I’m going to assume it’s probably belt related. Anyone experienced this? I’ve booked it in but typical m
- 1 reply
- 35 views
Optimus

8 hours ago8 hr

cliffcoggin

8 hours ago8 hr
Having problems working out my fuel tank capacity -
Audi A6 (C8) Forum

Having problems working out my fuel tank capacity -

Steve132 · June 13Jun 13

Hello I am a new Audi owner and have a A6 40tfsi C8 Facelift Sport Saloon. The car has been everything I hoped it would be -quiet and smooth on the road with enough power to keep me happy in retired life. When I first received the car it had a quarter tank so when it reached only 30 miles of fuel left I filled it up to the brim but could only fill 53 Litres. I have again run the car to show only 30 miles remaining and again can only fill 53 Litres before the tank is full I have checked th
- 5 replies
- 257 views
Steve132

June 13Jun 13

Optimus

8 hours ago8 hr
Rough idle on cold start
Audi A6 (C7) Forum

Rough idle on cold start

nitch · 21 hours ago21 hr

Hello, I've got a 2015 3.0 BiTdi Allroad. I get a rough idle when then engine is cold. Feels like a cylinder misfiring. Once up to temp, it's fine. The car has been used a bit more for short journeys than I'd have liked. There are no error codes on VCDS. I changed all the glow plugs recently as one had gone down. Could it be some carbon build-up? Is there anything I should be looking at in VCDS to help diagnose the issue? If it is carbon, what needs removing and cleaning? Thanks
- 1 reply
- 46 views
nitch

21 hours ago21 hr

Stevey Y

10 hours ago10 hr
Battery maybe faulty unsure, and couple other notes
Audi A5 Club

Battery maybe faulty unsure, and couple other notes

jpskiller · Wednesday at 01:05 PM2 days

Hi All, Car : 2015 A5 2.0lt 150hp Couple of issues so far. Had car around 3 weeks, had ATF & Filter changed Friday as history shows last change 40,000, car has 98,000 on it Particle filter warning came on dash, took car for spin down motorway but couldent get it start regen, but cleared code and checked soot levels via VCDS and seem ok Other day I disconnected negative terminal in battery to do full system reset, all went well until this morning, start car and get ECS fault, test battery at
- 12 replies
- 330 views
jpskiller

Wednesday at 01:05 PM2 days

Magnet

11 hours ago11 hr
start/stop issue
Audi A3 (8Y) Forum

start/stop issue

Paddington · Thursday at 01:56 PM1 day

Hi folks, looking for a bit of knowledge to help me understand a start/stop niggle with my 2026 model A3 S Line 35 petrol. The engine has suddenly taken to cutting out without warning. Doing so at 70 mph on the motorway was terrifying lucky I managed to dip the clutch before everything locked up. It has done this at various speeds since that first experience. I've been back to the main dealer who advised do NOT turn the stop/start system off and having done so touch wood no more cutting out inci
- 5 replies
- 155 views
Paddington

Thursday at 01:56 PM1 day

Paddington

12 hours ago12 hr
Oil usage on 3L A6 2014
Audi A6 (C7) Forum

Oil usage on 3L A6 2014

Lhotse · 12 hours ago12 hr

Hello all. I have recently changed my 2012 A6 for a 2014 as above. The car is in nice condition but it is using a bit of oil. I have done about 400 miles in it since Tuesday this week and already the oil level has dropped quite a bit. My 2012 Audi did not have this problem . Is it because it is a 3L V6 or does this have a potential oil problem? Many thanks
- 0 replies
- 21 views
Lhotse

12 hours ago12 hr

Lhotse

12 hours ago12 hr
Euro road trip via Nurburgring and Spa
Road Trips

Euro road trip via Nurburgring and Spa

T80HNO · February 23Feb 23

First post hope this sounds good any one interested in following? Heading off in to Europe for a couple of weeks with the S3 8v did similar last year bit this year am heading out there on Sunday the 24th of May for 2 weeks of epic road, sun and scenery also will be visiting Nurburgring for tourist laps over weekend of the 30th and 31st of May there is also on the same weekend the DMV Goodyear racing days series at the GP circuit https://www.nuerburgring.de/events/categories/automotive/dmv W
- 4 replies
- 636 views
T80HNO

February 23Feb 23

T80HNO

13 hours ago13 hr
2015 - CVT Gearbox!
Audi A5 Club

2015 - CVT Gearbox!

jpskiller · Thursday at 12:26 PM1 day

HI, 2015 2.0 TDI Technik 150hp 8 speed Had car aboutt 3 weeks, 97,700 on it, when picked up, now just over 98,000 can see ATF was done at 40,000, regular serviceing every year upto 67,,000 on avg only 5-10,000 miles per year, then in 2022 jumps 20,000 miles no more service records or documentation, Trader states with reciept OIL change and fluid top ups & 12 month mot before I pickup (400mile round trip), not sure can trust them. Ive had ATF & Filter changed, got DPF light on so took f
- 4 replies
- 98 views
jpskiller

Thursday at 12:26 PM1 day

jpskiller

16 hours ago16 hr
New Rear Springs
Audi A6 (C6) Forum

New Rear Springs

Ian Newman · May 5May 5

Hi Team, Can you help please help. Just had new rear springs fitted but the result isn’t what I or the local garage expected. Supplier has checked the colour code on original spring and has advised, correct springs have been supplied. I don’t remember seeing the seat area where the bottom of the broken spring sat but the seats where the new springs sit appear incorrect but they have to be there. Car sitting approx. 30mm too high, 264mm springs supplied. Las
- 2 replies
- 191 views
Ian Newman

May 5May 5

Ian Newman

16 hours ago16 hr
Rear windows
Audi A3 (8Y) Forum

Rear windows

Wysiwyg · 19 hours ago19 hr

Mornin' all The MyAudi app on my phone is showing Irregularities detected in the Status section: 'Rear Windows open'. They are not open, and I am unable to clear this message. Any ideas? Best regards.
- 2 replies
- 57 views
Wysiwyg

19 hours ago19 hr

AlanH

18 hours ago18 hr
Rear subframe
Audi A6 (C6) Forum

Rear subframe

Peter Podi · 18 hours ago18 hr

Hi All, can someone help and advise the part number for c6 avant, fwd, 2.0tdi rear subframe, please? I am struggling to find one.
- 0 replies
- 19 views
Peter Podi

18 hours ago18 hr

Peter Podi

18 hours ago18 hr
Help with aircon distribution please.
Audi A6 (C7) Forum

Help with aircon distribution please.

Jake1991 · Thursday at 09:33 AM1 day

Good morning I would be eternally grateful if anybody can help with a very annoying issue I have with the air blowers. When I set the blowers to the dashboard vents, air comes out of the passenger side and middle vents but not the drivers. Instead the air comes through the footwell vent on the drivers side and not the dashboard vent. To make it even more confusing, when I set the blowers to to the footwell it stops coming out of the drivers side and only comes out the passenger side. I assume it
- 4 replies
- 102 views
Jake1991

Thursday at 09:33 AM1 day

cliffcoggin

18 hours ago18 hr
Help darnest thing new engine falters and doesn't have power
Audi Q5 Club

Help darnest thing new engine falters and doesn't have power

crashoverride · Monday at 06:45 PM4 days

I got a weird one. I'm fairly car literate and I'm usually able diagnose and know the problem to pull in to my local independent shop and tell them this and this need to be fixed and replaced. But this has me stumped. I have a 2016 Q5 2.0 engine that went bad with carbon deposits yada yada... So I stepped up got a new motor from Power Engines it came all crated up they were super helpful pleased with them. My mechanic moved all the bits and reattached them to the new engine from the old. Everyt
- 13 replies
- 465 views
crashoverride

Monday at 06:45 PM4 days

Magnet

19 hours ago19 hr
Boot opens when drivers door opened
Audi Q8 Club

Boot opens when drivers door opened

Raj A · Thursday at 07:59 PM1 day

2026 SQ8 Often my boot opens when I open the drivers door. Sometimes I find it open for no reason even when the key is not on my person. Today I found the front passenger window opened and the roof tilted about 10 minutes after arriving home when they were definitely closed. Has anyone else had these issues? Any ideas? 7e84e0e21d83473aa1ec13f4f11b59da05052026_111657am.mp4
- 2 replies
- 75 views
Raj A

Thursday at 07:59 PM1 day

Steve Q

Yesterday at 02:50 AM1 day

Welcome to the Audi Owners' Club - An Independent community!

Rusty brake disc

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Topics

Ai the mechanic?

Hydraulic whine when low speed engine idle a/c on

Having problems working out my fuel tank capacity -

Rough idle on cold start

Battery maybe faulty unsure, and couple other notes

start/stop issue

Oil usage on 3L A6 2014

Euro road trip via Nurburgring and Spa

2015 - CVT Gearbox!

New Rear Springs

Rear windows

Rear subframe

Help with aircon distribution please.

Help darnest thing new engine falters and doesn't have power

Boot opens when drivers door opened

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