...so I collected a couple of data points related to recent threads. Karen and I found ourselves on a relatively level portion of I-75 today, so I decided to try a couple things. First, I got the instantaneous mileage display up on the driver’s display. I then compared the gas mileage displayed with both HV and HV CHARGE selected. At 75 mph, HV returned 40 mpg, HN CHARGE about 30 mpg. Seems like a huge hit, but then again I was building EV miles that down the road would result in zero gas used, so the calculus of HV CHARGE’S effect on efficiency is indeed complicated. Second, I intentionally took the EV miles remaining down to 0.0. I then engaged HV CHARGE mode and noted for the odometer. The EV range stayed at 0.0 for a mile or so. I then switched to the instantaneous mileage for a minute, then back to the EV range, which had jumped up to 3.2 EV miles remaining, in less than 3 miles driven total. At least I fended off boredom for a few minutes!