Kia EV9 Luggage Test: How much fits behind the third row (and frunk)?

According to its interior dimension specs, the Kia EV9 electric SUV has 20.2 cubic-feet of cargo volume behind its raised third row. For comparison, the Kia Telluride has 21 cubic-feet, while most other three-row crossovers are in the 16-18 cubic-foot range. So, in theory, the EV9 should be able to carry more stuff behind its third row than most. It should also be awfully similar to the Telluride.

Of course, as I've found time and time again, it's rarely that simple. There are underfloor storage areas to consider, and in the EV9's case, a frunk as well. Let's see how much can actually fit back there.

Here is the space behind the third row. Immediately, I can see that this is an atypically deep space. Also, this is the first time I can remember that the wheel wells extended deeper than the third row. This would be the result of the EV9's electric platform that expands the wheelbase and pushes the wheels to the corners. 

The Telluride relies upon a large, useful underfloor storage area (above right) to effectively lower its cargo floor and stuff in more bags than every competitor but the Chevrolet Traverse/Buick Enclave and Toyota Grand Highlander.

As you can see above left, the EV9 does not have this. It still provides a space to store the cargo cover (goes over the lowered third row) and there is space for the tire inflation bottle thingy and other odds and ends, but it is not useful for expanding luggage capacity.

Now, onto the bags. First, since the EV9's third row reclines, I set the angle (as always) to what I would deem a comfortable angle. That's as scientific as that gets, I'm afraid. Second, as with every Luggage Test, I use two midsize roller suitcases that would need to be checked in at the airport (26 inches long, 16 wide, 11 deep), two black roll-aboard suitcases that just barely fit in the overhead (24L x 15W x 10D), and one smaller green roll-aboard that fits easily (23L x 15W x 10D). I also include my wife's fancy overnight bag just to spruce things up a bit (21L x 12W x 12D).

Pretty good! The EV9 joins the Grand Highlander as the only three-row crossover I've tested that is wide enough to put my two biggest bags next to each other like that. They just