Hello again John - Thank you for your reply and info..
Normally, these leak rainwater in from under the bonnet area...from the plenum chamber - in through a defective pollen filter housing seal... and because of blocked drain holes in the chamber - but while you can check that ..I note you mention the main area seems to be the boot...
It wouldn't be getting to the boot from the front - so in this case..the cause is usually the rear lamp seals.
You can try nipping up / tightening the fixing mounts / nuts for the rear lamp units - If they are particularly loose which can happen...they will let water in through the unit seals.
If they are already tight or that doesn't help..then you will need to remove the lamp units complete - clean up the area well and either fit new lamp seals ( from SEAT) -or use a silicone sealant applied where the seal fits..and that works well.
have a leaking boot seal - rubber seal but I doubt that ...again - the usual fault when it fills the boot / wheel well area is the lights.. And as you drive and brake...the water sloshes / runs down under the back of the back seats and wets all the area in the rear foot wells. If it is allowed to go on - the fronts will eventually get wet too as it will soak through under the front seats..either or both sides depending on how bad it gets.
You will have misting up on the glass inside....while ever the damp is in the car.
You may have to remove the seats to remove the carpets to dry it all out once you have cured the leak ingress as above.. Under the carpet is sound deadening material which gets soaked. Removal to dry them out is the best way albeit a somewhat major task..I Sincerely XXXXX XXXXX have helped you - but do ask me if you need anything more..
Kind Rgds, MIKE
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