The 2013 Infiniti JX was created as a family vehicle first and foremost, with the goal of maximizing interior volume, safety, and convenience. Its designers spent a lot of time making the third row not only hospitable but easy to reach--and to escape.
The front seats are comfortable and well bolstered, and the second seat offers ample space for real-world adults. The second-row seat slides 5.5 inches forward or backward, producing class-leading legroom in the second row when all the way back--but giving third-row occupants more legroom if needed. The one caveat we noted is that if the front seats are fitted with optional seat cooling, there's virtually no room underneath them for second-row passengers' feet.
The company touts its class-leading 14 inches of space between the second-row seat back (when folded forward) and the door frame, which really does make it easier for kids and even adults to clamber in and out. The second seat has been articulated so that the bottom cushion tilts up as it folds forward. The third row is tolerable for occasional adult use but, like many, has its cushion low to the floor, leading to a knees-up position that's less than comfortable for those adults over the long haul.
Unusually, the second seat can be folded forward for third-row access even with a child safety seat latched into place using the Isofix anchors--unlike any other three-row crossover, Infiniti says. The seat back is split 60/40 in the second row, with the third row split 50/50.
Total interior volume is 149.8 cubic feet, more than either the Acura MDX or the Audi Q7. There's 15.8 cubic feet of space behind the third row, as much as a decent-sized compact sedan's trunk.
Two different JX vehicles we tested seemed well-built, though we were explicitly warned that they were pre-production vehicles, so might not be representative. In that light, we can forgive a single loose piece of trim--and we'll carefully check over our first JX test car.