Many questions have come up regarding efficiency metrics and I thought it would be good if we started posting some of ours. I have done some research and have posted instructions on how to calculate mi/kWh and MPGe below. (If you see any errors please feel free to let me know). While MPGe is somewhat theoretical, miles per kWh is pretty cut and dry is a good measuring stick across all electric vehicles. For comparison purposes, miles driven must be in electric mode and kWh measurements must be "wall to wheel" (no adjustments for charging inefficiencies). To calculate mi/kWh and MPGe (in electric vehicle mode only): Step 1: Charge battery up to full Step 2: Drive and record mileage driven (with no ICE activity) Step 3: Charge battery up to full and record how many kWhs it took to charge Step 4: Divide step 2 by step 3 - this is your mi/kWh Step 5: Multiply Step 4 by 33.7 - this is your MPGe Step 5: post the following: -miles/kWh -MPGe -Type of Drive (i.e. City, Highway, Mixed) -Your charger Voltage/Amps (i.e. Level 2 240/32; Level 2 240/16; Level 1) -Your local high temperature (doesn’t have to be precise i.e...90’s) Guidelines and Notes: -For this experiment let’s do a minimum of 25 miles and the max is unlimited. Its okay if it take you a few days to reach the 25 mile minimum, just make sure you keep good records of the miles and kWh consumed. -During drive, do not allow ICE to come on. If it does start over at step 1. -There should be no adjustments for charging inefficiencies. It’s “wall to wheel” energy used and miles from your trip odometer. We can segregate and compare by the type of charger voltage/amp types. If you have a Level 1 charger you will need either a smart plug or a Killiwatt to determine your kWh’s consumed. -Canadians please convert kilometers to miles please. I will start if off: -4.38 mi/kWh (27.4mi, 6.26kWh) -148 MPGe -Mixed Driving -Level 2 (240/32) -mid 80’s Finally here are some benchmark/stock mi/kWh and MPGe figures for vehicles in all electric mode from fueleconomy.gov (higher numbers are better): 2018 Hyundai Ioniq PHEV: 3.53 mi/kWh 119 MPGe 2018 Clarity PHEV: 3.26 mi/kWh 110 MPGe 2018 Chevy Volt: 3.14mi/kWh 106 MPGe 2018 Ford Fusion Energi PHEV: 2.88 mi/kWh 97 MPGe 2018 Tesla Model 3 Long Range: 3.86 mi/kWh 130 MPGe 2018 Honda Clarity EV: 3.38 mi/kWh 114 MPGe 2018 Nissan Leaf: 3.32 mi/kWh 112 MPGe Eager to see what everyone else is getting!