Worked example
At 10,000 miles, a 45 MPG petrol car at 145p/litre costs about £1,465 in fuel. An EV averaging 3.5 miles/kWh at 25p/kWh costs about £714 in electricity.
Frequently asked questions
Should I use home or public charging prices?
Use a blended rate that reflects where you actually charge, or run the calculation twice.
Does this prove an EV is cheaper overall?
No. It compares energy cost only, not total ownership cost.