Heavy rain drowned my A8

[Big Dave]

Last evening we had a torrential rain storm, the heaviest downpour I've seen here (Chesterfield). When I went to start my 2003 A8 this afternoon - nothing.. The key fob wouldn't unlock it and once I'd got inside it wouldn't start, it was totally dead.

My recovery service couldn't solve the problem and it wasn't until I'd got my local Audi chap out that he spotted the front passenger floor mat was soaked. Further delving found that underneath the pollen filter was almost an inch deep in water, the drain had become blocked over the years and last evening's rain had been enough to soak whatever electrics are in there. After nudging the drain grommet beneath the filer, water poured out under the car, several pints I woudl have thought.

The car is being taken in tomorrow - not an easy job as it's immobile with the steering lock and parking brake on (thanks to the recovery driver...) So - to my question - what's the likely damage and (of course) what's the likely cost?

By the way - check your drains....!