....but I think that may be just from water sloshing forward under braking.......Once I started driving, the swimming pool was back -
Reminds me of a mate who had a Mk1 Cortina Estate.
Rear wheel arch was corroded so every time it rained, water was pumped into the load area.
When he braked, it all rushed forward.
Self draining though, there was also a hole in the passenger footwell
Scuttle drains are always favourite on Megs, Scenics, Kangoos.
Not only must top end be clear of mud, gunge, leaves etc but drain pipes as well.
When you hose down the screen, you should be able to see water draining from inside the wheel arch inner covers.
This is where the pipes come out and the lower end often clogs.
Fetching the arch covers off is often needed.
Apart from that, anywhere there is a hole in the shell.
Lights, wing mirrors, door seals, door drains.