Hi,
I too have a 2000 20vt and have long suffered from water leaks in spite of much attention from various dealers...
Last year the
problem became progressively worse and I was stung into action - follow this
guide to the letter
http://www.seatcupra.net/forums/showthread.php?t=44216
and you will suffer no more, hopefully.
I haven't had a
problem since comprehensively sealing both front doors - well worth taking a few hours of fairly straightforward DIY for little cost.
I have to say a big thank you to Andy for taking time to provide such a
guide.
Hope this works for you...