Water sloshing about - behind seats - clear blocked drains?

[CaptainCarNose]

I bought a second hand Z3 in summer and now its getting wet I think a lot of water is getting into the car. Inside feels dry but the boot is quite wet - I thought it was just a leaking brake light (i am going to get a new gasket as this is defo leaking a bit) but Im wondering if rain water is either coming through a small gap at the back of the hood, or if the rain water is travelling down through the designed route but is stuck at a blocked drain point.

Can drain points be blocked? where are they?

How can i get into the between the boot and behind the seats because it sounds like a lot of water sloshing about in there!!

thanks

 

[t-tony]

There are roof drains at either side of the car. Watch this from @FRANKIE

View: https://www.youtube.com/watch?v=Z8cBd7UP0dk


Tony.