Water is leaking into the trunk of my CN1 (7th generation saloon facelift). Water enters the trunk through the rear air outlet and collects just beneath. After a drive water finally ends up in the spare tyre well. It's such a huge amount of water that I can't believe that only the rear air vent is to keep water out. I believe water runs along the body work from the rear taillight to the rear air vent. Before removing the rear bumper to check my theory did anyone experience the same issue?