2014 Audi A1 1.6 TDI S-Line - Water in Bootlid - Cubic
I'm getting a massive amount of water collecting in my bootlid. I can hear it sloshing around after rainfall. Can't for the life in me work out how it's getting in. It's not getting into the car, just in the panel itself. Just concerned it'll end up rusting inside.

Anyone know about this issue?
2014 Audi A1 1.6 TDI S-Line - Water in Bootlid - elekie&a/c doctor
Possibly the rear washer jet tube adrift or split.
2014 Audi A1 1.6 TDI S-Line - Water in Bootlid - Cubic
Possibly the rear washer jet tube adrift or split.

Thanks. I've checked and it's definitely rain water.
2014 Audi A1 1.6 TDI S-Line - Water in Bootlid - elekie&a/c doctor
I wonder if it’s coming in through the wiper motor shaft or the rubber tube between the body and tailgate.