My MINI isn't, completely. I have twice found the passsenger footwell slightly damp. Seems to have been a blocked drain ahead of the windscreen.
A pal's Merc 200 SLK wasn't waterproof either - however, the river did rise to near 80cm and the relief pumps to put floodwater back into the Severn failed, so I guess that's a slightly different tale smile


Graham (G4FUJ)

Sold L44FOR 4/4 Giallo Fly
'11 MINI Countryman Cooper D All4
'90 LR 90 SW