This is a "How long is a piece of string" question.
The answer is impossible to work out without intimate knowledge of each car in the equation.
This thread could go on for another two thousand answers and you still won't have the correct answer.
What do you want to use the car for? How much do you want to spend?
I honestly wouldn't buy any of the cars you listed.
Even a city golf (similar size) would be better and cheaper to maintain.
Again, you're looking at oldish 2nd hand cars. Condition and history of the specific car is very important.
Also Google each car and see what is the most common things that break on those models.
All cars eventually break, question is, how often does it break, what does it cost to fix and will you be able to find parts.(and a mechanic that can fix it.)
Opel Corsa for sure
Have a look at cars from 90's early 00's that are still on the road. Which one of the above brands do you see?
Opel, Fiat. Especially Opel. Whether you are a fan or not there is no denying Opel's keep going for a long time.
Exact reason I won't touch VW/Audi - hardly old ones on the road (Golf 4 anyone?)
My first car was a Corsa and it did not want to break, no matter how hard I tried...
As previously said all depends on who had the car before you and what they did with it.
Looking parts only, best bet out of those would be Opel.
Why do you not look at VW? The Jetta / Golf 3 is also plenty still on the roads and spares are usually easy to find and cheap.
Would stay away from Fiat - had a friend that needed to replace wheel bearings and had to replace whole lot else due to everything coming in one not separate as most other cars