NelsonP

@mandeep Identical symptoms to my car. I'd only recently purchased mine as an Approved Used Audi and it was rectified by the dealer eventually. They did not share much detail, but mentioned that the source of the water was in fact from under the wheel arch, and that the problem is rectified by fitting self draining bungs. You have no hope of removing all of the water with your vac as it sits in all of the cavities under the floor. Over time this will cause a mouldy smell in the car if not rectified. It is a big job, as all of the water must be removed from the car, and its possible that trim, carpets and any water damaged components will need to be replaced. This is why Audi will not acknowledge it. Perhaps the community on here, the fact that there is a class action suit and that Audi almost certainly have a TSB about it will persuade them to listen. Failing that I'd go to a consumer organisation like Which? and see whether they would be prepared to act.

Same same?

Similar issues on the A5 perhaps? The comments there suggest Audi are charging customers to resolve it, which is pretty shocking as it is obviously a design fault.

Looking at that video there is definitely something that could be done about it. Just redesign and insert some replacement drains. In my case, if the dealer can't sort it I will return the car for a refund. It has been in their workshop for 2 weeks now (!) Audi UK must be aware of this and need to do something about it. Similar unaddressed issues in the past have resulted in class action lawsuits. The A4 B8 had incorrectly specced piston rings between 2009-2011, which resulted in excessive oil usage. Audi refused to deal with the problem until a US-led class action lawsuit changed their mind. Let's hope that they are more proactive this time.

As I understand it the water gets in through the air inlet, into the heating system and out through the vents under the seat. I'll see what the dealer says...

Yeah, looks like this could be the issue...

I reckon this is the problem....

Just wondering, was this the problem? I have a 2019 A6 with a wer floor. Only just bought it. It's going back to the dealer to get fixed, but I found a lot of leaves and crud under the windscreen. Looks like the previous owner parked it under a tree.

I just bought a 2019 A6 Avant and same issue. The offside rear footwell had about 1/2 an inch of water in it earlier today. The Audi dealer I bought it from is investigating, have read elsewhere that there is a TSB for it so hoping to get it sorted. Will post an update here when I have it.