I understand what you guys are saying, my car just doesn't seem to behave that way.
I don't mean mine goes in EV mode to drain the battery, it uses EV assist (both ICE and EV at the same time), even on flat terrain, until it depletes the battery about 10%.Then recharges. It's like it constantly wants to cycle. During the EV Assist on flat terrain, I see instant MPG at around 50 or so, but it's also depleting the battery and needs to recharge so it's a wash. And there doesn't seem to be anything I can do to make it ignore EV assist. If I give it more gas, it assists more, if I back off on the gas it goes into full EV. Granted I only tried it 4-5 times on my 900 mile trip to Boston over the 4th, so maybe I wasn't doing it quite right.
Make sure you are using the Empower gauge. With the wrong gauge you are just herding cats (chasing the impossible).