I can say from experience that vehicle selection goes down much more once you need to expand to a fifth row. There were just two choices, one from Ford and one from GM.

Fitting three car seats across is still difficult, despite enough car width to have a 4-wide bench in the rear. Putting car seats in the back rows makes them hard to get to, so they should go in the second row or in the third row seat nearest the door. That gives reasonably easy room for 3, but some states would have had me needing 5.