What this result means
A positive result means the EV uses less money for energy over the entered monthly distance; a negative result means petrol energy cost is lower under those assumptions.
How the EV vs Gas / Petrol Cost Calculator works
Energy cost only; vehicle price, maintenance, depreciation, and charging equipment are excluded.
The calculator does not fetch live prices or rates. That is intentional: you provide the tariff, price, rate or cost that actually applies to your situation, which makes the assumptions visible and avoids presenting stale market data as current.
How to get a more useful estimate
- Use real-world efficiency for both vehicles.
- If you often use expensive public charging, use a blended electricity rate rather than only your home tariff.
- Treat energy cost as one part of the ownership comparison; purchase price and depreciation can dominate.
Scenario check
Use the same distance for both vehicles and change fuel price, electricity price and efficiency one at a time. If the sign of the result flips after a small price change, the energy-cost advantage is fragile. If it remains positive or negative across a wide range, the energy comparison is more robust, although ownership costs still need separate analysis.
Important limitations
- Purchase price, financing, insurance, maintenance, taxes, and depreciation are excluded.
- Charging losses are not separately modeled unless reflected in the EV consumption figure.
- Fuel and power prices can change over time.
Frequently asked questions
Does a positive result mean the EV is cheaper overall?
No. It means the entered energy cost is lower. Total ownership cost depends on many other factors.
Should EV consumption include charging losses?
If your kWh/100 km figure comes from wall-to-wheel energy, yes. If it is only vehicle-reported battery use, actual charging cost can be somewhat higher.
Can I use different currencies?
Use one currency consistently for fuel and electricity prices; the currency selector only changes the displayed symbol.