In reply to abr1966:
I was in a similar place a few weeks back. Like you I hold on to cars for a decade or so.
I just got a VW Touran... Like you I was looking for either BMW or VW estate size car for dogs and family etc. I also worried that a 1.4 petrol engine would feel underpowered in an MPV sized car. It hasn't felt like that at any point yet, but to qualify, I haven't done any fully-laden journeys since I only picked it up.
Like you I also had reservations about 3 cylinder 1.5 petrol BMW engines. I ended up going with the Touran for its slightly higher ride height (better view of the road ahead and I start feel really uncomfortable being low slung on long journeys) and also for the ability to fold both rear rows of seats flat into the floor to create an almost van like rear space which is useful. So far no one has mistaken me for their Uber but it'll probably happen at some point.
I'm hoping this will be my last ever petrol car and that the range on electrics will improve to the point that they'll be practical for my work patterns of frequent long return journeys in a day to various places around the country.
I also seriously looked at 2017/8 Passat GTEs (petrol/hybrid). They get good reviews & they have decent rear bootspace despite the battery. They're capable of some great MPG figures with the battery assisting the 1.4 engine on long journeys. (20 mile range on battery only.) They were slightly over budget but I just could not find one. Every one I enquired about had either just sold or was the other side of the country.
As another tip... I had to get the car in a hurry as mine was on its last legs and I need to drive long distances for work. I was able to do a test drive. I had to ring ahead and put down a refundable 100 quid deposit to do so. Not all dealerships are offering this though.
Happy shopping.