hi, i have a octavia mk1 L&K Esatate...  i have a condensation problem.  all Windows +sunroof are covered every day. and now in winter time its ice...after a 3 hour drive or in a workshop,  the problem is eliminated for a few days and its back.  i live in Norway. some snow  will get in the car this time of year. but i don't think this is the problem (other cars around here don't  have this problem).  i can't se any water ingress.. but  in the rear right  tire well I can sometime se condensation. that have let to central locking going totally ape****...  

any suggestions how i can fix this.. thx

 

English is my second  language.. so maybe  bad.. ask if you don't understand

 

I have exactly the same problem in winter in the exact same car. Ice on the inside of the screen is a horrible surprise 😞  I was told to check the rear lamp units which can let water in

You may also have some vent flaps in the boot that need replacing. Mine is the hatchback, but if you peel away the lining on the right side of the boot there are two sets of vents.

Part no 2 in this diagram: https://www.ilcats.ru/skoda/?function=getParts&market=SVW&model=OCT&modelcode=202&year=1999&dirname=R&group=8&subgroup=819&part=819030&language=en