Friday, August 25, 2023

Miles/kWh comparison to ICE MPG

Has an internal combustion engine (ICE) driver asked you what miles per gallon your EV car gets? I have fielded that question a number of times particularly while charging at a public station. 

VW provides a MPGe rating for the Pro S AWD of 99. As a comparison we have a Ford Escape AWD that is reasonably similar car and gets about 20 MPG city and 28 highway. So to compare these two there must be an assumption for the cost of gas and electricity, so I created a spreadsheet with public charging and home charging comparison:

Note: for ID.4 owners with a free EA charging plan or other free charging, the math becomes irrelevant (infinity Miles/$10 energy) so that is not shown.



It is no surprise that the ID.4 is more efficient for city driving for both charging scenarios; however, for highway the difference is less pronounced:

  • Solid lines are the ID.4
  • Dashed lines are the Escape


For public charging on a highway road trip the ICE car is more cost effective when gas prices are low. This will be even more pronounced in driving conditions with high air conditioning use, mountains, etc. where the EV energy usage per mile increase.

Please remember, your mileage may vary!
😁





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