Young used up to 12.000 EUR/ for 70 km. daily journey

Dear users, since I started my new job, I need a car. I will drive a total of 70 km (35 km x 2) every day from the city of Munich to Munich airport. I would like to discover the beautiful surrounding area of Bavaria on weekends. I will NOT use the car in the city. My employer gives me 0.09 cents/km, so a “quasi” economical car would be good. Therefore, SUVs or old luxury cars are excluded. I am thinking about whether I am looking for a car. BMW 1er should/can buy, or a comparatively cheaper small car. I find BMW pretty from the design, whereby I am not sure to invest so much money for my first car. Unfortunately, I am not a car connoisseur, so I want something that does not cause so much problems (I know it is usually a lucky thing). I would be grateful for your opinions.