2020 Superb iV.  The last couple of journeys I have had on the car have been 2 hours plus each way. 

 

On both of the last occasions about 90mins into the drive (having had the air con on low since start), all of a sudden dust starts blowing out of the vents, not just a little bit, almost like the vents are vaping!! If I put the air con on recirculate the dust doesn't come in. 

 

There is a noticeable difference in the power of the air coming out from the vents now though, almost like they are blocked. The power goes back to normal once the car has been turned off overnight and the air con put back on. 

 

Filter was last changed 8 months ago, about 8000 miles. 

 

Any ideas? 

It does sound the same as this forum member experienced, their fix is in the last post 

 

Thanks for that. Sounds like it could well be the same issue. The car is 3 years and 9 months old, luckily I have taken out extended warranty directly with Skoda which I hope will cover this!! 

 

My problem is that it is quite intermittent, in that it seems to only kick in on longer journeys and once the car has had time to rest it goes back to normal. Hopefully the dealer will still be able to test for the problem somehow.