my car is a marea sx 100 16v ( y reg )
when was the last time your pollen filter was changed?
Thanks for getting my hopes up... unfortunately I checked my late model Brava expecting to find a blocked pollen filter, but there is nothing under that panel at all.
I think the problem is that the air just can't get OUT of my car, it's just pressurised. Even the incoming ventilation is restricted - if I crack open a window or the sunroof the flow increases dramatically, and I even get a big side draught through a ripped seal on the drivers door.
Maybe a design fault on this particular body style?