All the recent talk about the low EPA range number for the Porsche Taycan got me interested in revisiting what my car’s window sticker for my 2104 MS85.
First the EPA statement about the origin of their costs calculations:
“Actual results will vary for many reasons, including driving conditions and how you drive and maintain your vehicle. The average new vehicle gets 23 MPG and costs $11,500 to fuel over 5 years. Cost estimates are based on 15,000 miles per year at 0.12 per kW-hr. MPGe is miles per gasoline equivalent. Vehicle emissions are a significant cause of climate change and smog”
Ok, what I can’t figure out is where they came up with a gasoline cost of $11,500 over 5 years, at 23 MPG. I think the cost over 5 years is less. 15,000 miles / 23 MPG equals 652 gallons of gas per year or a total of 3,260 gallons over 5 years. That works out to an avg gas price of $3.53 per gallon. Since the EPA statement and MPG and miles traveled per year are for the average car on the road, why is the gas price not an average gas price? It may be average for CA, but the EPA numbers are presumably not CA centric.
Here in CT in my town, the present price per gallon for regular gas is $2.73. 3,260 gal x $2.73 = $8,899 for 5 years. Am I missing something here? The cost of kWh the EPA statement cites is certainly a national average because I know that I pay $.20 p kWh and from what I have read here, people in CA pay more than “$.12”. So, the EPA calculations use avg miles per year, avg MPG, avg electricity costs, yet their numbers equal a far above avg cost per gallon for gas.
Lastly, this is meant to be an academic question/discussion, not how the EPA calculates range or their MPGe numbers.