Purchase advice/evaluation

Hello all, I am in the following, here probably not rare situation. Finished studied, employment contract signed. Simple journey ~40 km, open no option. That is, I am now looking for my car. Since I am used to diesel driving by my parents, prefer the engine characteristics of a diesel to that of a petrol engine and drive to work exclusively highway and highway, I would like to put a diesel in front of the door. I have now set myself 10,000 euros (unfortunately no reserves were made during my studies) Since I will probably drive around 25t km in the year, my focus is on economy, comfort and longevity. I have only slight prejudices against brands, which can be safely eliminated with a sound argumentation. 🙂 I would like to be one of the compact class. I just love with the following offer:https://www.autoscout24.de/…/…d3ba-6802-4dad-8163-52b dc2f7175e?… I made the car for a test drive this morning. However, the dealer immediately opened to me that he sold the car to me only without warranty, because he already has inquiries from abroad, therefore also the favorable price (actually in this price range no comparable models can be found) However, service and oil change are due and battery has indicated a low charging level (but can also come from the long standing). short assessment of the offer or alternative offers from the greater Stuttgart area. Thank you for your help!