Leaking back hatchback

[Smokeyrubyruby3]

Hi,I have got A180 year 2009
There is water in the boot part ,I think the rubber around the hatchback is at fault. Is this common with this model. And how much will it cost to put right
Thanks

 

[Dec]

You should carry out some investigative work to establish where the water is coming in.
It could be washer fluid from the rear wiper washer jets if the washer fluid tube was loose or off.
It could also be a bad seal at a light cluster lens.
Dry it out and place paper kitchen towels around likely areas where water might be entering and wait for it to rain or use a garden hose to see where the paper is getting wet.

Dec