New car 3 child seats rear bench

Greetings! We are looking for a new car, where we get 3 child seats on the back seat. The selection is not big. Our budget is max. 14-15K €, i.e. of course used cars. What I have seen, you get there some weighings with BJ from 2014/15 with approx. from 90,000 KM. My wife prefers VW, there would be a touran for example. I vehemently refuse to always refer to one brand. Now my real question: Is it really like this? that VW is so great in this category (VW Touran, BJ from 2014, Diesel, ~90K KM) of the Preil/Performance ratio that I have to pay the “VW Bonus”? I would have found another one: Toyoto Verso, Peugeot 5008, Ford S-Max, Renaul Grand Scenic, Citroen C4 Grand Picasso and Opel Zafira Tourer – there should fit in 3 child seats everywhere (in a row on the back bench). What do you think… are there in your experience good/bad cars, from which you would advise me or the recommendation. Are you worth it? Of course – you can have bad luck with every car…but I still have to look at money and want to make the best deal possible. Thank you!