Paddy755

Hi Mark, No worries, I hope you find the cause of the water ingress, please share that on here as im sure it will help others. BDW I did take this up with Audi UK, they did not accept any liability as the TSB was issued in the USA! So that was their excuse even though its the exact same model etc Good luck

Sorry to hear this buddy. Really do feel for you. But this will help: Looking at your pictures I can confirm your issue is 100% identical to my previous issue. What's happened is the following: Water had collected under the car over some time and has been rising as it cant find a way out (design flaw) The water makes its way out/up from a small gap just under the vent under the driver's seat and pools in the rear footwell. If you stick your finger down there you will feel a deep puddle of water. If it's not treated the water will eventually end up under the little control module under the driver's seat, and your seat will stop working 😞 I had mine done privately, and the easiest, cheapest and quickest way is to get under the car and remove the carpet/cover from under the car, and you will find some rubber grommets (I think there are approx. 5 of them); one by one pull all of them out and watch the waterfall (have a bucket) – dont bother putting them back in. This does not fix the issue however, the water will find its way out. To be on the safe side, I would just probably do both sides while you're at it. It should take a mechanic around 10 mins to do each side, so it shouldn't cost more than £50 I am not a mechanic, so please do your own research; however, following this method will save you £1000s, and it's an instant fix. Please dont bother wasting any more money on a mechanic diagnosing the issue, not worth it in my opinion. I hope this helps you out, it's really disappointing knowing after spending all your hard-earned money you're having to deal with unnecessary BS Keep me posted!!

In a nut shell Audi UK will not honour their fu** up so other than the motor ombudsman there is nothing I can do to rectify their design flaw. Unfortunately I cant sell the vehicle as it is. Repairing it will cost at least £2k plus from Audi just to look at it as they are charging £180 per hour and require 8-10 hours just to strip the seat and carpet. Driving it could cause further damage to the vehicle, as the seat has now stopped functioning. If anyone has any suggestions please feel free to share them, would be highly appreciated. Car is booked in to the garage on Wednesday hopefully they can sort it out. I think I may still contact the Motor Obudsman as I may not be the only one who has reported this to them. I will continue to keep you posted!!

Their final reply: Thank you for your email and for sharing your concerns in detail. We understand that you have provided a technical bulletin from the U.S. market regarding water ingress. However, please note that if this were a recognised manufacturing issue within the UK, the Audi factory would have issued a formal recall, and affected customers would have been notified accordingly. We appreciate your position and the frustration this situation has caused. At this stage, we have reviewed your case thoroughly with both Manchester Audi and our internal teams, and we are unable to offer a goodwill contribution. If you remain dissatisfied with this outcome, you are entitled to escalate the matter to The Motor Ombudsman, who can provide independent advice and support. Thank you again for taking the time to contact Audi UK. Kind regards

My response below: Thank you for your email and for keeping me updated on the outcome of your review. I appreciate the time taken by Audi UK and Manchester Audi in considering my case. However, I must respectfully disagree with the decision not to offer a goodwill contribution for the water ingress issue on my Audi A6. While I understand that the vehicle has not been seen within the Audi Network for the last 16,000 miles, the water ingress problem appears to stem from a design flaw, not from a lack of maintenance or servicing. This issue would not have been impacted by the fact that the vehicle was not seen for the last 16,000 miles, especially considering that it had a gearbox service carried out in November 2024 at Preston Audi. Recent work was completed at Audi Manchester just a few weeks ago. As the manufacturer of the vehicle, I would appreciate it if Audi UK could clarify its recommendation in the event of a design-related flaw such as this. The water ingress issue is related to an underlying design flaw, and it would logically manifest regardless of mileage or service intervals. Numerous other Audi owners have reported experiencing the same issue, which further suggests that this is not an isolated incident but potentially a systemic problem that needs to be addressed at the manufacturer level. Additionally, the fact that the vehicle was not purchased through the Audi Network should not exclude it from consideration, as I have maintained the car according to Audi’s guidelines. This issue, which seems to be design-related, warrants a reassessment, particularly given that several other Audi owners are facing the same water ingress problem. (I can send evidence of this) I respectfully request that this matter be reconsidered, taking into account both the potential design flaw and the fact that numerous other owners are reporting similar issues. I am hopeful that Audi UK will consider offering a goodwill gesture to resolve this matter. Thank you again for your attention to this issue, and I look forward to your response. Kind regards,

Update - reponse from Audi UK below: Dear ****** Thank you for your patience while we investigated your case. I’m contacting you on behalf of your Case Manager, who is currently on annual leave. We have reviewed your case in collaboration with the management team at Manchester Audi and internally here at Audi UK, specifically regarding your request for a goodwill gesture in relation to the water ingress issue in your vehicle. After careful consideration, we regret to inform you that we are unable to offer a goodwill contribution in this instance. Our records show that your vehicle has not been seen within the Audi Network since 16,000 miles. Additionally, your third-party warranty provider has declined to cover the cost, and Manchester Audi have confirmed they will not be supporting the repair, as the vehicle was not purchased through the Audi Network and has not been maintained to brand standards. Please also note that there is no legal obligation for Audi UK to contribute in this case. That said, we do understand this may be disappointing, and I would like to sincerely apologise for any inconvenience caused. Kind regards

Ideally need it sorting ASAP, definitely can't wait 4 months for a response. The water could get into the wiring loom etc and render the car worthless. Thanks

Thanks Doug, I have emailed the letter directly to Audi UK, but as you went through your local dealer and they honoured it I think i'll also send them one for good measure. Thanks

Hey Guys, First time on this forum! I bought an A6 C8 in August 2024, everything seemed well until I noticed a huge puddle behind the drivers seat footwell a few weeks ago. It appears its the same/similar problem everyone is also experiencing, took it to Audi Manchester a few days ago for a check - £145 an hour! they said they needed another 8-10 hours to remove the seats and carpet to identify the leak!! Decided not to pay the £1400 minimum and took the car home. My issue is exactly the same as Mandeep. Will be taking it to an independant garage for a diagnosis (cheaper labour rate) In the meantime drafted a letter to send to Audi head office, I will paste it below in case anyone else needs to use the draft etc Going off all the posts above i'm sure Audi are aware of the issue, whether they will honour the repair remains to be seen, but not holding my breath. I will report back once I have had a response from head office. Dear Audi Customer Services, I hope this message finds you well. My name is ******* *****, and I am reaching out to formally raise an issue with my Audi A6 C8, which I believe stems from a known design flaw. I have been experiencing water pooling under the carpet in the rear footwell, specifically behind the driver’s seat. After conducting some research, I discovered that this is a common problem among Audi A6 C8 owners, and Audi has issued a Technical Service Bulletin (TSB) outlining the issue as a design fault. You can view the TSB here: TSB - Audi A6 C8 Water Leak Additionally, I came across this thread on the Audi Owners Club, where other owners have reported the same issue: Discussion Thread - Audi Owners Club This issue is one that Audi is already aware of, and it has even led to a class action lawsuit against the company, specifically related to the water leaks in the Audi A6 C8. This highlights the extent of the problem and reinforces that it is not an isolated issue, but a design flaw that has affected many owners. Despite this being a known problem, I recently paid £152 for a diagnostic check at Manchester Audi, yet they were unable to identify the source of the leak. However, based on my online findings, the TSB issued by Audi, and the class action lawsuit, it is clear that this is not an isolated incident and is related to a design issue, rather than something I have caused or neglected. I am aware that Audi has previously honoured this issue and, on occasion, has fixed the problem free of charge for affected customers. Given that this is a design flaw and not an error on my part, I kindly request that Audi UK address the issue in a similar manner, as a goodwill gesture. I trust that Audi UK will stand by the quality of its vehicles and rectify this issue without further delay. I would appreciate a swift resolution and look forward to your prompt response. Thank you for your attention to this matter. I hope this letter helps someone who may need it.