Well this is my 8G trouble right before it's getting replaced (2008 2.2 Sport):
- slipping clutch: it comes and goes on an irregular basis, so I didn't get it fixed
- squeaking clutch pedal: I don't care about, enough rattles elsewhere to keep me busy
- corroded fuel line: that one was quite annoying a week ago (6 weeks before my new car arrives -.-)
- failed A/C relay: I was lucky it failed open and not closed, so only relay replacing helped
- failed left wing mirror LED and heater: probably some kind of corrosion because of water inside the wing mirror because of hail damage (so not really the cars fault)
- rattles: around 1,7k rpm some part of the dash rattles horribly, driving over a bump makes a strange glassy noise as if the windshield is going to jump out
- dampers: after 230,000 km they are dead (started leaking and are probably dry by now)
- broken radio: the CD player wouldn't read any CD anymore and the CDs got really hot, so I replaced it with an Android HU
- DPF: it chooses the worst times to do a regeneration and had to take it two times to the dealer to get it cleaned and no I'm not just driving 5 km...
- battery: died at some point, but that is to expected
A major issue was with my front brakes getting really wobbly after around 10,000 km. But that was because the right wheel got two really hard hits. One hitting a curb with around 60 kph (was hidden behind some grass on the inside of a curve) and the other hitting something lying on the road with 80 kph, probably a stone, which ruined the tire so hard it had to be replaced. But can't really fault the car for that one.
That being said, there was no major issue costing horrible amounts of money. I've done roughly 100,000 km in the past five years I own this car. I had to pay around 4700 € for repairs and servicing during that time. Because it has a horrible hail damage it was very cheap. In total I have to pay around 0.20 €/km which is a great value, so although the last month has been horrible (DPF, dampers and fuel line) overall I am very happy with the car. Ultra practical, fun to drive and yet still economical.