Here's my info, @M0Par
: I'm too lazy to post a photo, but my Average MPG (as shown on the dash) is currently ~85. I have been driving (according to my records and the hybrid page history graph on the radio) for the last 2-3 weeks 99-100% electric-only.
More background: The MPG listed above SHOULD be merely an MPGe calculation according to the EPA: https://en.wikipedia.org/wiki/Miles_per_gallon_gasoline_equivalent
So it means I can go 85 miles on 33.7 kWh of electrical energy. This matches the sticker for my van (84 MPGe), but is more than what the van estimates (33 miles on 100% battery which is 16 kWh). (85 miles * 16 kWh / 33.7 kWh = 40.4 miles of range) I can believe that on a full charge I can go 40 miles right now with moderate temperatures, moderate driving, and zero use of heater/AC. That makes sense to me. 84 MPGe sounds pretty good but by comparison, other electric vehicles are much better (Tesla vehicles are 120+ MPGe).
Now my .02: Where Chrysler made it "wrong" is trying to combine ICE/hybrid-mode MPG with electric-only MPGe. They use the same label (MPG) and seem to use a magic conversion (maybe 33.7 kWh = 1 gallon of gas) to combine all into one number: The Hybrid Energy page on the radio shows ICE usage in kWh and the dash efficiency page rating shows everything (including battery) in MPG. This might be convenient, but is misleading and leads people to just view everything as "magic numbers" that don't tell them anything about the efficiency of their vehicle. Unless you carefully drive 100% electric-only like I did for the past 2 weeks, you can't compare your electric-only mode to other vehicles with the current dash and radio info. And unless you drive in 100% ICE/hybrid mode, you can't compare your actual miles per gallon efficiency to other non-plugin vehicles. And the best you can do for calculating your cost per mile (gas and electric combined) is just do an average from one gas tank fill to the next, taking into account gallons, miles, and kWh from all the chargers you used.
I don't really know what would be better, but maybe a cost per mile would be more grounded in reality. Even a rough estimate of local electricity costs and gas prices would be enough to show a nice graph. Maybe the needle/circle graph (like a speedometer or the Energy Economy live chart you have in the photo) could show what you're currently getting, with two sections clearly marked: one for the "normal" ICE/hybrid range of values and one for electric-only. Or maybe just have them be two completely separate metrics with separate charts, stats, etc.