I have the dreaded water in the drivers footwell problem and from reading the thread here ( Audi A6 Avant - Water in footwell problem) there are a lot of possibilities. Mine is a 2007 C6/4F Allroad with a Sunroof. I suspect mine is due to a blocked sunroof drain or leaking bonnet release grommet. Either way I need to get the trim round the drivers door frame off.


PS: For anyone coming across this thread, here is a summary of what it could be from the other threads:

1. Blocked sunroof drain
2. Blocked holes in the chasis underneath causing water to bubble up through the floor
3. Leak around the pollen filter?
4. Blocked drain in plenum chamber? (I think this is more an issue with the C5 model)
5. Rear wiper pipe leaking (you would smell the fluid)
6. Leaking seal to bonnet release
7. Door not sealing properly