I've got a problem. The carpet behind my passenger seat in the rear foot well is soaking wet when ever it rains or I wash the car. I've had the carpet up and theres no holes in the floor so dont know where the wet is coming from. And its not just damp, its saturated. Anyone had this problem or know where its coming from. Seats, headlining etc are bone dry and its only this bit of carpet that is wet.

 

is there any holes in the inner sill the sun roof drains into the sills my rs does the same

i never sorted mine it,s been in the garage for the last 6 months coz somone wiped it out and now lost intrest after building it for a year

 

check for rust holes under the battery tray,could leak through, and if you park the car on a hill could run straight behind the back seat,make sure drain holes in the cills are clear!

 

the front pipes run into the sill
make sure all the holes underneath are clear
if its had new inner sills fitted it will leak
or drill a large hole at the front of the sill and put a large pipe in it for the sunroof drain pipe

on the rear the s1 drains into the lower rear quarter and the s2 drains out the lower rear quarter

 

do you have opening rear quarters, is it parked on a incline

 

try taking the carpet up in the front. and have a look at where the wheel arch beging on the inside i had a little hole there and i had the same problem

 

in an S1 the front drains into the sill and the rear drains out the inner rear valance.

check your rear light seals/boot seal as well, door seals (at the top where it slams onto)