Examples of Prime electricity/gas usage

Sorry for the earlier snark. I was trying tor read the post on an iPhone and it was ... difficult.

Bob Wilson

 

how do you calculate mpg in the prime?

 

What I did to check actual mpg was once battery was drained and was in HV mode, Reset trip and on trip screen it will show your accumulating mpg. I did a 100+ mile round trip at 55-60mph and averaged in the mid 60's. then did a freeway trip to Dayton at 75-80 and got mid 50's for mpg and when I arrived in dayton and still in HV mode I reset trip again while driving around the city and averaged 70mpg I was real easy on the gas and did the pulse and glide thing. id say 60 would be easy without too much effort.

 

excellent!

 

HIGHWAY

From North Kingstown RI, I drove ~100 miles to brother Dave's home in Hamden CT. In automatic mode, EV was soon exhausted. Upon leaving Dave's home, I set the destination to Wilkes-Barre PA to intersect I-81. I topped off the gas tank and started clocking miles using dynamic cruise control.

Upon reaching the Wilkes-Barre area, I took a lunch break and reset the destination to our home in Huntsville AL. The rest was use dynamic cruise control to follow trucks or other traffic with occasional biology breaks.

Near Lexington VA, the "out of gas" warning light came on. The MPG was running about 55 MPG so I took a chance that there was at least 1 gallon of gas remaining and continued to the Daleville VA exit. I topped off the tank with 10.9 gallons. Subsequent testing revealed I had about 0.4-0.5 gallons remaining. At the Alabama border I took another coffee break and reset a trip meter to finish driving at 55 mph to Huntsville.

Summary: 1,200 miles, 21 hours, 55.7 MPG

HUNTSVILLE

This week I'm driving all EV. In the morning, I switch the J1772 from the Prime to the BMW i3-REx and with a full charge, I drive to the cross-town road, the Parkway. Once I reach any area posted 25 mph or more, I set the cruise control including the neighborhood. The rest of the drive is 'keeping up with traffic' which typically ranges from +5 to +10 mph over the posted speeds.

On cold mornings, I use the heated seat and drive in my medium winter coat. I'll hit the defrosters as needed to keep the windshield and rear glass clear. Otherwise the cabin heat is off and set the air valve to cabin recirculate. I drive using the cool side of comfortable with dynamic cruise control at every opportunity including coming to a complete stop at traffic lights behind the leading vehicle.

At lunch time, I drive to L2 chargers near work and an hour later, the morning commute miles are recharged. Then I drive back to work slowly to preserve charge.

When leaving work, I call home to coordinate any errands. Based on that call, I'll stop at shopping centers along the way with L2 chargers. When I get home, I switch the J1772 back to the Prime and unload anything bought on the way home.

After six days, I'm at 244 miles and the experiment ends Monday morning. There is a good chance the experiment will end just under 300 miles for the week or about 15.6k miles per year. Add a couple of cross-country family and vacation trips and we're in the 18-20k miles per year we normally clock up.

Bob Wilson

 

EPA city all-electric range is 27.1 miles, so you have outperformed EPA