BMW 320d or 520d up to 25,000 Euro – Which vehicle fits my driver profile?

Good morning dear community, I am looking for a new vehicle, as my previous vehicle would not have paid for the repairs compared to the vehicle value. I can say to my driver profile: -Annual KM performance 15-20,000 KM -Predominantly long distance -> at the destination with quite a lot of city traffic -Priority to a relative economical consumption, despite a fairly fast driving mode -The vehicle should accompany me in the long term (free according to the motto: Until the T For the narrow selection I have fixed myself to the 320d (F30) and to the 520d (F10) – both with the 8-speed automatic. I have already driven the 5s quite often, but an E60 model – and not the F10 – model. I always liked the 5s, especially because of the comfort. A few days ago I received a 316i F30 at SIXT. The engine power already impressed me with the small entry-level motor – harmonized super with the 8-speed automatic. Consumption was also great. On the internet I asked about the 320d and it is already motor-friendly – completely sufficient for me. The 520d is a bit sluggish compared to the 320d, which is probably due to the extra weight – but I could also arrange with it. For me these are both great vehicles…. My heart actually beats for both vehicles – but a little more for the 5 BMW. Unfortunately, it is so that I in my Pre iframe had to buy the 5 with much more KM. The 5 in my price frame would have had about 70-100,000 KM already on the speedometer. The 3 in contrast would have only about 40-60,000 KM on the speedometer – with the same price frame. Of course, these are two completely different “classes”. Now I am faced with the choice….I really don’t know what fits my o.g driver profile and is also completely sufficient. As I said, I want to drive the vehicle to the end and there are the slightly higher KM performance for me. What is your opinion about this? Which vehicle would you rather tend to my requirements? Thank you in advance. Greetings from the north! I am very happy to be able to find a way to find out what you are looking for.