Fair point, except my 2020 jlur 2.0 does not have the mild hybrid assist, and I can achieve 20mpg, if not better.Remember that the "standard 2.0 turbo" already is a mild hybrid system; it's already benefiting from start/stop and some regenerative braking and some electric assist off the line with the etorque system. The EPA classifies it as a mild-hybrid system. So the 4xe *when not plugged in* will do worse than the 2.0 mild hybrid because it's lugging around hundreds of pounds of battery that is "dead weight".
Not intentionally trying to argue with anyone, but unless the true hybrid mpg simply didn’t get tested and quoted, it still feels a little gimmicky. Yes, you benefit if you plug in and charge everyday. But as a stand alone hybrid system, there is zero benefit, or to your point, a degradation in range as a result of the added weight. I guess at the end of the day it’s just not what I expected, is all.