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Discussion Starter #1
The trip odometer display on the left screen (the 'driver information' display) also shows average MPG for the trip. Very helpful and right in front of your face. The problem for me is that because I'm almost always running on electric, and the display shows MPG, not MPGe, it's always showing '250+', which is pointless. Does anybody know if there's a way to get that display to show MPGe? That would be way more useful and would avoid a (potentially distracting) trip to the energy screen on the central (infotainment) display.
 

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Useful? The Gen 2 Volt’s window sticker rating of 53 ev miles and 106 MPGe indicates the car’s fuel tank holds only 0.5 Ge (or, one-half gallon of electric energy equivalence) of fuel. Perhaps it would be informative if the MPGe gauge were limited to displaying mileage numbers only after you had driven a gallon’s worth of distance (i.e., after using two full charges of grid electricity, your mileage is x miles/Ge, after four full charges, after six full charges, etc.). How precise would you expect a mileage reading to be that attempted to calculate your "mileage" based on using 2-3 cups of fuel to drive ~13-20 miles?

Keep in mind that MPGe is based on electricity "from the wall," and does not attempt to deal with the impact of any additional electric fuel energy you add to the battery’s supply of grid power as you drive (i.e., regen).

If you drive until your Gen 2 battery is fully depleted and then multiply the achieved electric range by two, you have your MPGe mileage for that half-gallon of fuel. Combine the electric ranges you achieve using two full charges to get your MPGe mileage for one gallon of Ge used. Remember that getting 120 MPGe from a car rated at 106 MPGe is like getting 28.3 mpg from a gas car rated at 25 mpg. Is it particularly noteworthy?
 

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Nope. Page 131 of the manual specifically states this DIC screen only shows "average FUEL economy".
It's gas fuel economy, which means that if you never use gas this will sit at 250 even though the MPGe showing on the center stack will usually be between 70 (sub-zero F temps) and 150 (summer and slow steady driving). OP and I would like to see this number reflected on the trip odometers.
 

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It's a plug-in hybrid, so it's got displays appropriate for a plug-in hybrid.
 

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Like using metric, I suspect 99.99999999% of Americans will not care, use, or understand MPGe. Not saying that's good, or that GM could not add a preference setting, just that most would not use it.
 

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...and I suspect that the trip meter thing would really only be used on longer trips anyways (by the vast majority of users). Hence, MPG is more relevant as the driver will definitely be using gasoline on such extended trips.
 

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It's a plug-in hybrid, so it's got displays appropriate for a plug-in hybrid.
Except for this display. The trip odometers MPG number is gas based only, not hybrid based.
 

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Discussion Starter #10
Count me as somebody who'd like to see more info about electricity usage, more easily. I'm usually using Carplay and the infotainment screen is set to that. To get to elec usage, I need to go to the home screen, then the info screen. Then two button presses to get back to where I was. Meanwhile 250+ is uselessly visible at all times.
 

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It can't and there's no point.

MPGe is only used for the EPA rating. It's a wall-to-wheel measurement that takes into account charging losses. The car doesn't know about all the losses.
 

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If you want to see the MPGe on the center display, just go to the Energy screen, select Info, and press the box on the left side to switch it to MPGe.

Today I got my highest MPGe ever for a round trip to work of 152 MPGe.
 
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