Which model/year of construction at BMW E9x or E6x is recommended?

Hello, my 17-year-old 3s compact doesn’t really want to do that anymore and I need replacement. Would now like to buy a touring with “normal” motorization and pick up between 10,000 to max. 15,000 euros. I don’t want more than 125,000 km and from year 2009, so as a guideline. Since the price difference, at least when buying, is not so big anymore, I have already looked there. Since my 3s compact is a model (was) what reliability, Reperatu I also have a few detailed questions;-) I have seen a lot less because of the start-stop-automatics. I have seen a lot less. Is that reindeer, or is it quite vulnerable? Oh yes and then of course the eternal question: Diesel or petroler ? Drive between 10,000 and 15,000 km, so you usually say petroler. If you look at the maintenance costs, but don’t give yourself that. so much. Gasoline needs more money for fuel, insurance, tax is cheaper, the diesel is vice versa. And diesel is more often found on the market at BMW. So now I’m through with my questions and look forward to your information and experiences.