Cold air around centre console/passenger footwell when driving

Marc A

Marc A
I am getting cold air come in around the lower part of the centre console (around cupholders/12v socket) and passenger footwell area when driving - when the fans are off.

Checked the heating system/air-con and flaps seem to be working fine, temp is working fine, cold air only comes in when driving. Read it could be pollen filter but spoke to a mechanic and he's adamant it's not but said it will be a specialist job - I dont want to spend £££ at the dealers.

Anyone else have the same issue on a B9 or Audi for that matter?