Let’s go from back to front, because that’s why you’d buy this model. And the back row is easy enough to get into - if you’re nimble - I wouldn’t be asking nanna to climb over the folded seat into the back. The third row has enough space for children and small adults (that’s me - a small adult at 161cm), so I was comfortable, but I’m fairly certain my 185cm husband would object if he had to sit back there. Still, kids will be fine.
Moving forward, the second row is spacious, with loads of legroom. Strangely, the top tether for child seats is in the roof, so I secured my child’s seat (in the middle row) with a tether to the roof, and it actually ate into the headspace for the back row. The roof is low anyway because the full-size sunroof (which is a lovely feature) lowers the roof by 8.4cm - a large amount. This would definitely make a difference if you were a tall teenager. You’d just have to configure your child seats so that everyone had enough room.
The front is comfortable, light and airy. There’s lots of leg space and headspace.
Boot space is decent. With all seven seats in action, the boot comes in at 150 litres which is just enough to fit schoolbags and a few grocery bags. If the third row is down, the boot space grows to 472 litres, and I found that to be enough room for a full grocery load, and of course, a pram. It’s about 30 litres bigger than a Mazda CX-5’s. If you want to pop all seats down, the space expands to 967 litres.