Family car up to 18k€

Hello dear Motor-Talk municipality, I am looking for a new vehicle for my wife and the rest of the family, budget up to 18 k€ about. We are a family with two children (11 and 14 years old) + dog, mileage about 15tkm/pa, mainly city and short distances. Currently a Peugeot 308 SW 120 VTI, BJ 2008 is present, is also quite ok so far, especially the room offer in this class is already great. The 120 hp engine is however quite tired and is not really fun, therefore the desire the car I myself have a BMW 318d touring as a service car, great car, but as a family car for our “average family” new anyway unaffordable, therefore at best needed as 318it with 50 tkm on the clock an alternative. Premium also doesn’t have to be necessarily (especially if I see the whole gammelden C-classes from the 00s every day…). My wife somehow has a VW affinity, which I a I would rather have the urge to have a little more engine capacity, but without a loader and as easy and stable as possible (if there is still such a thing). The car should also not be older than 3 years. I can’t really estimate the useful life yet, the plan is “to the bitter end”, but you never know how to pack it…. I know, this is all a bit unspecific, but it’s all a bit unspecific, but Maybe you have some suggestions that will make it easier for me to decide which direction it might go. Thank you in advance for your answers!