Method
How to calculate estimated annual fuel saving with ev
Both vehicles use the same annual distance. Positive output means the entered EV energy cost is lower; negative output means it is higher.
FORMULAEV cost = distance × kWh per distance; fuel cost = distance ÷ economy × fuel price
Worked example
EV vs petrol/gas cost comparison calculator example
At 12,000 miles, 0.3 kWh/mile and $0.18/kWh, EV energy costs $648 before comparison with fuel.
Change one assumption at a time to see what drives the result. The output is an estimate, not a quote, forecast or recommendation.
FAQ
EV vs petrol/gas cost comparison calculator FAQ
Does this compare total ownership cost?
No. Purchase price, insurance, depreciation, maintenance, taxes and financing are excluded.
Can the result be negative?
Yes. A negative saving means the entered EV energy cost exceeds the petrol/gas fuel cost.
How should public charging be handled?
Use a blended electricity rate reflecting the share charged at home and on public networks.