Hi newbie b6 owner

[Jambo1uk]

Hi all new here (Wales UK)
we have just bought a 2005 estate
150k miles
Full service history to 2019

All seems ok car drives great pulls well does everything it should apart from now and then the clutch will stay towards the floor returning about half way (needs pulling back with foot)
No fluid leaks that I can see anywhere could this be down to not having the brake fluid changed at the recommended intervals?

Also the drivers window when moved down will sometimes do down when pressed up ?