New car profitable ? Advantage?

Hi guys, I’m starting right now. At the moment I’m driving a Peugeot 306 sport which was built in 2000 and ran ~150,000 km. I have the car now 4 years and am actually satisfied with it. (Of course there are smaller problems but nothing wild) I have now thought (since I saved money) to buy a new car. I have a view of the 1er BMW or a newer golf. But now to the problem: I drive almost only short distances. I say 10 km a day, from time to time a we iteren way, but rarer. So I thought, if I can get the Peugeot sold now for good money, if it would not be more logical then to get me a newer car, which is several years by my side. Or should you rather “open” the Peugeot 306? It has just one disadvantage and that it swallows 9-10 liters and is relatively expensive in the insurance. So Peugeot try to sell and fetch new car or drive on Peugeot?! Also knows that short distances not so own for the car, but a scooter is not to be thought of. I hoped to get for the Peugeot about 2,500 (with a little luck :P) and the new up to 12.00€. However, I would rather be there between 8,000 and 10,000. But also don’t know how expensive BMW or a golf e.g. (they just fell in the eye) in the insurance or with upcoming reperatures are. What do you mean? Greeting and many thanks