Hello All, I was checking on this site for solution to this issue and read a few simular issue. But heres the symptom, cause and solution. Symptoms - Water in foot well behind front seat, passenger side. Cause - Blocked rain water drainage under car battery. Solution - Remove cover that covers the battery/air con filter, just clips, then remove battery, under the battery holder you will see two drainage points. Mine were blocked by dirt and twigges. Just simply push your finger or if your a blouse something else down the hole and the water will flow stright out. Mine had about 4 litres of water in it, unrreal.