How this calculator works
The calculator compares depreciation, energy, and maintenance. Charging efficiency adjusts for electricity lost between the wall and battery. The homepage version also includes insurance, incentives, adjustable ownership period, and a cumulative break-even chart.
Example
EV advantage
Lower energy and maintenance costs can offset a higher purchase price.
Gas advantage
A lower purchase price or stronger resale value can outweigh operating savings.
What can change the answer?
Actual financing terms, taxes, fees, incentives, insurance, maintenance, depreciation, driving patterns, and vehicle condition can materially change the result. Use current transaction-specific inputs whenever possible.
Common questions
Is an EV always cheaper?
No. Purchase price, energy, insurance, incentives, depreciation, and driving patterns can change the answer.
What is charging efficiency?
Not every kWh drawn from the wall reaches the battery; the homepage lets you adjust this assumption.
How do I model public charging?
Use an electricity rate that reflects your actual charging mix.
What about a home charger?
Add installation separately when comparing your real out-of-pocket costs.
Why does ownership period matter?
Operating savings compound over time, while purchase price and depreciation affect the early years more strongly.