Wouldn't doubt if real word mpg will exceed epa estimates. I have a 14 audi q5 tdi w/ 3.0 V6 rated at 24/31 and I routinely get 28/38 with light/average driving habits w/ attainable driving range 700 miles on highway trips going 65-70 mph. It does have about 20 gallon tank though. Will be interesting to see how reviews pan out.
If its anything like that, and the $4K premium is mostly for show, my interest may be rekindled.
I've been surprised how often I've wanted to tow with my CX-5, a couple of stump grinder rentals, a riding mower, an assembled trampoline. Being able to average 30mpg in my real world driving is the dividing line between thinking of the thing as being efficient or not.