Diesel or gasoline in these demands?

Good morning, since I have little idea of the matter, I would be very happy about some advice. I need a “new” (older used) car. Now, besides models (it is supposed to be a high-roof combi or mini-bus to be able to stay in it) also the question about the engine. I have a very different profile of rides, therefore I do not know if a petrol or diesel would fit better. In everyday life I drive only good 5 km to the station, from which I commute with the public. In the summer the intention is to drive regularly also by bike to the train station, but weather and pig dog then certainly let me take the car often. In addition 1-2 times the week to appointments or shopping, also mostly under 10 km, so classic short distance. So would speak for the petroler. But on the other hand, I drive about 2x monthly 300km to the family. Additional several times in the year with trailers (motor bikes to meet and race track) or bicycle carriers to WE holidays. In addition 1-2 yearly longer holiday trips. But it is enough to talk about a diesel, the daily life, but there is not too much too busy.