My commute distance was 16.6 miles one way (all ECO, no highway, max speed 45, avg around 30)
Along the way, the average efficiency reported by the trip computer increased from 4.1 to 4.2.
That basically implies my trip efficiency was probably even higher than 4.2
Now when I finally got to work, the remaining miles shown 73 (in ECO!, 67 in normal)
That is 106-73 = 33 miles reported on 16.6 mile trip in ECO mode with 4.2+ miles/kwh efficiency.
So excuse me, Nissan?! What the hell?

So, the original 106 miles reported are based on what? Am I supposed to drive 8 miles/kwh to match that?