Why does my Renault megane have a water leak in front passenger footwell?

Answer 1

because the drain pipe from the sunroof is blocked. this is a very common problem as it has happened to both mine and my brothers megane's more than once. It can easily be sorted pumping the pipe with a high pressured pump. the correct type fitting will be needed. the type of fitting that is use on an air bed is fine. you do not even need to take the drainage pipe out if u can reach it. if you do try to take the drainage pipe out, then please note that it is permanently fixed to the bottom, so you could do damage trying. The drainage pipes, should you be wondering, are positioned in the front two corners of the sunroof (they may not be very well visible). The passenger side tends to be affected more as this is the side which the gutter is in, and dirt blocks the drainage hole at the bottom.