There are many seven or eight-seat SUVs on the market today that you would presume you would be able to fit five child seats in, but as I have found in my testing this is not the case! Either the second row doesn't fit three child seats or the rear row doesn't have top tether points, or you can't access them without uninstalling the second-row child seats!!
Here is a list of all the seven and eight-seater SUV's, that I have reviewed so far, and found would fit five child seats in-
The Mazda CX-9 has FIVE top tether points?!! Yes! They are in all three central row seats and both third-row seats too! But the central seat's anchor point was strangely located slightly under the seat base and not clearly labelled, which didn't fill me with confidence when I was installing my child seat! There are ISOFix points in both the outer second-row seats, they are hidden in slits of the seat leather so you do have to line them up carefully and are not as simple as when they're within plastic guides. The second-row seat, behind the front passengers, has a folding mechanism that allows it to fold and move forward with a child seat installed (if using the ISO Fix, not the seatbelt) and gives a big step-through access to the third-row seats! I managed to very comfortably fit five large Britax child seats into the CX-9, still with plenty of legroom in the front for driver and 23cm of knee room for the front passenger! First, I put the Britax Platinum Pro in the third row and the rear-facing Britax Unity infant capsule and Britax Graphene (installed as rear facing) in the second-row outer seats and the Britax Kid Guard Pro booster seat in the central seat, there was plenty of space around the seats and installation was really simple.