My first car – probably not a dream car yet…?!

My name is Franz, I am 20 years old and still for the next ~3 years student. Nevertheless, I still get a monthly income of about 600€. I can also live for free in the best hotel in the world. Now I am at a point where I can almost no longer pass by a own car. Brother becomes 18, now also uses the cars of my parents and so on. I will not drive 100,000 km a year, but so about 10,000+ who I am looking for a car for around 8,000 €, which is not overly expensive in the maintenance. Of course it is supposed to be a used car. I see myself as a rather quiet driver, but also on the highway occasionally wants to pass by with swing left. Originally I always thought it had to be due to price some old Opel Corsa. Meanwhile I “unfortunately” got into the small Audi models A1 and A3, because the yes pure from the purchase price I’m very fond of Audi in general and the idea is now so in my head… Would I like to spend about 250 € per month on running costs with the two models? Now I wanted to ask you if this would be a sensible undertaking? I’m also open to alternative suggestions. I don’t need a show car, but I want to be happy to get into the car myself. MfG Franz