Had the problem since a got the car a couple of years ago. Last on my list of jobs. Whenever it rains there is water on the door sills. Wet carpets and the windscreen steams up overnight. I've checked the inner door seals under the door trims and they've already been done with silicone by the looks it and are completely sealed. I have noticed there is some strange window under a carpet on the bulkhead in the engine bay that's filled with water and has some kind of bung on it. Also when I jack up the car after rain. Yeah it gets jacked up a lot. Water will flow out from around the sub frame area. Any ideas? Pollen filter seal etc. Thanks.