Puddle in passenger rear footwell

[VW BUSH]

Long shot but look at the pollen filter!

Good shout

[Len]

I remembered that this happened to me about 8 years ago and weirdly it was the pollen filter getting completely blocked up!

[Jasikasisback]

It may be that the rubber grommet there is no longer letting fluid out or is only letting fluid in.. I had the same problem after I took a long 600 mile trip in the rain to Scotland last year...it turned out the grommet was perished so I removed it and siliconed a replacement in and that was that...You will have to remove the rear carpets and the insulation underneath. I suggest you do this ASAP as that sound deadening (or whatever that fiberglass looking stuff is) will start to rot and dry it out and you can put it back and see if it stays dry and then replace it with something better...

I know my repair has held up as today went to Portsmouth and the real stayed dry...

The grommet looked fine from the bottom of the car, but the problem was that it was letting water in and not out......

People have suggested that it be welded over...but I don't have a welder...so I did a quick fix..

[kodkod.84]

I had this issue and it was the front passenger sun roof drain pipe, which had come off the drain connection.  Was a bit of a pain to sort as you have to drop the roof lining and A pillar trim to connect the pipe back up.

I ended up using a fresh piece of silicon hose instead of the brittle 17 year old clear drain pipe, to make sure it wouldn't come off again in a hurry.

Best test to see if this is your issue is to get a small cup of water and pour it down the front sunroof (passenger side) drain hole with the door shut and note where the water exits - outside your car near front of the door, you're fine.  Inside the car = good luck! 

Got this exact same problem on my car which has manifested itself in this heavy rain recently.

Did as above and indeed it is leaking in the front footwell and then pooling in the rear, so will have to take a look at replacing the pipe!

[hotdogsmale]

Sorted sunroof drains blocked gave it to a mate he took them out unblocked them now good as gold