If you're avoiding Puretec, EcoBoost, imports and diesel, I think your best bet might be to look at a Renault Scenic or Grand Scenic.

The Dacia’s safety score is largely due to it’s not having the latest electronic bongs that many on here would happily not have as they can be irritating or distracting. I haven’t checked but I guess it’s physical collision scores are OK. The Vitara which has been suggested has a better safety score but it’s quite an old one. If it went through the newer tests it’s like to score rather lower, comparable to the Jogger.

Safety aside your main problem will be space. We have a Vitara and like it a lot but the boot (375 litres) is less than you want. You could add a roof box though. The other space issue is trying to fit three child seats across. The Vitara probably won’t take three. Few cars will, I don’t have a definitive list but you probably need to revisit cars like the Berlingo and Jogger. Or move up a size to larger cars.

It's also worth noting that the Euro NCAP criteria and testing method has changed over time, so unless you're comparing two new cars it won't necessarily be comparing like with like. The Dacia Jogger may only have a 1 star rating against the current criteria, but if the alternative is something like an older VW Sharon (which got a 4 star rating back in 2019) they may not actually be as different as the figures suggest.

There are examples of very long lived car models, the Fiat Punto was one, where the car got a 5 star rating when the model was new, but was retested later in its life to the new standards and got a zero star rating.