Sorry guys I know how committed and dedicated to the GTV you are and it pains me to say this.
My 2000 GTV, a beautiful looking car for sure has in nearly 35 years of motoring caused me more problems over 6 months of ownership than I care to recall. Main issues and some more serious than others;
Windows fail to close properly despite the vane attempts of two specialist Alfa Specialists, Door locking mechanism failed making securing the door closed difficult at best before fix; Air Flow Meter failure, Cracked induction pipe causing poor running, Endless trim items failing or just coming away, Rear suspension subframe bushes failed causing excessive subframe deterioration. Windscreen Wiper Failure. The list goes on.
Okay so the car had done 75K Miles but really I recently let go one of my Jaguars, a 1992 XJS with well over 200K miles which in over ten years of ownership was all but faultless.
Do I still like Alfa's well yes of course I do they are simply superb to look at and to drive. Would I buy another, sadly no Sorry.
Is it me or does this lot sound not that
They are mini-Ferraris, a typical Italian sports car that needs plenty of TLC and isn't cheap to run or maintain.
To get specific with your points:
Windows: Common problem, and once fixed they might align poorly again after a couple of months. Silicon spray around the top of the window rubber and top of the window will help things a little.
Door lock: Don't know exactly what your problem was. I had one where the internal door release wouldn't work properly, sorted it myself for free.
Air flow meter: Known issue with this part, happens on various makes and is actually a Bosch problem, not an Alfa one.
Induction pipe: Old, cracked rubber (nearly 9 years old) can occur on any car make surely?
Trim problems: If they're falling away I'd assume the previous owners have fiddled with them, mine aren't loose at all.
Bushes: Expensive weakness of this car, they'll all need doing probably way before 100k unfortunately. Not good.
Wipers: Don't know what the issue was with them.
We never know how a 2nd hand car has actually been treated before we get them, even with the most thorough of inspections, and of course I don't know how thoroughly you went over this GTV before parting with the £££.
They're not like German cars, there's a noticeable difference when you go from German to Italian, and there's loads of bits I just don't like about the GTV, but over time I've appreciated mine more and more, and the looks, go, sound and rarity of the GTV make up for the short-comings for me. It does feel a bit unique, a bit rare, a bit of a bold choice – risky even, and for that I accept I have to pay a bit more for it.