Citroen C4 Grand Picasso

New battery December-2024. NCT valid until 7 Feb 2026. Inspection of car and offers welcome. Not a speeder, but surprisingly responsive for 1.6 engine and car size. Clean inside out, no major body marks for its age. Last serviced and timing belt changed at 220K km. All tires good, front ones almost new. The Issues: 1) Front passenger side electric window needs linkage replaced. 2) While heating and A/C works just fine, changing air blow direction stopped to work recently (could be some fuse, not sure) 3) On occasion electric handbrake wont disengage automatically with a warning, sometimes after cold/wet night for example. Releasing it manually and just driving away, gets it all good after next stop (probably some cleaning around wheel speed sensors or some handbrake adjustment needed) 4) Rarely, on longer runs on motorway "Depollution System Faulty" warning pops out - this is issue started at least 8 years ago. Various stuff replaced - EGR Valve, few sensors, Turbo changed, all the filters either replaced or cleaned, DPF itself taken out and cleaned. Warning shows up once a while. As it has no influence on the car at all. You can just drive it with the warning up all the time, or you can clear the errors using some simple ODB reader. 5) Around one week ago the car is not starting. It alao says economy mode active when trying to start the car. Not sure what is the issue, it hasn't been checked by mechanics.