I've ran my Clio (55 plate mk 3, 1.5 dCi) for 5 years and 55,000 miles. It's now coming up to 10 years old and 100,000 miles and I'm quite pleased truth be told.
I've only had to replace consumables on it. Although this year has been a bit of a stinger - pair of springs, track rod end, drop links and suspension arm - I would attribute that to my locale and driving style. I do home visits all day long (care) in the middle of Snowdonia on awful roads. I live in the middle of it too so it never gets an easy ride. I reckon if I lived in a city or just did motorway runs with it I wouldn't have had half of these things. The glow plugs have also been changed this year. I don't think any of the above are unacceptable. Perhaps I'm making excuses but I guess if I am that's a sign of how much enjoy my car. I recently had a 63 plate Focus 1.0 125 Ecoboost as a courtesy car and as much as I enjoyed the engine the car itself was quite poor I felt. Really rattly steering column, unattractive dashboard and vague steering. I was glad to get back in my Clio! The only electrical issue I've had was a broken indicator stalk but that was fixed easily enough with a replacement.
As with most cars these days I think service history is significantly more important than brand. If someone doesn't bother servicing their car they likely don't care much for it and don't look after it.
There are some interesting and myth-busting figures re: mechanical reliability which show up German marques as worse than the French if you want to search those up. If I wanted to 'upgrade' to a more reliable marque I'd definitely go Japanese. I see going for German marques as a bit of side-step in that respect. VW have excellent perceived quality and marketing departments but I was really surprised by how many newish cars were coming in with serious failures when I worked at a VW dealership.