EV vs petrol running cost calculator
Is an EV worth it? Enter both cars' consumption and your local prices to see the energy cost gap per year and per 100 km.
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How to use it
- Enter ev consumption, electricity price per kwh, petrol car consumption, fuel price per liter and distance per year.
- The result appears straight away and updates as you edit.
- Copy the result, or copy a link that keeps the same values to share it.
How it is calculated
EV cost = distance ÷ 100 × consumption (kWh/100 km) × price per kWh. Petrol cost = distance ÷ 100 × consumption (L/100 km) × price per liter. Saving = the difference.
Example
Inputs: EV consumption = 17 kWh/100 km, Electricity price per kWh = 0.18, Petrol car consumption = 8 L/100 km, Fuel price per liter = 2.33, Distance per year = 20,000 km. Result: Yearly saving with the EV: 3,116.00; EV yearly energy cost: 612.00; Petrol yearly fuel cost: 3,728.00.
Limits and caveats
- The EV figure on the dashboard excludes charging losses; add about 10% for the true bill.
- Purchase price, servicing and insurance are not included, and prices are assumed constant.
Questions about this tool
How much does an EV usually use?
Many mid-size EVs use 14 to 22 kWh per 100 km, more at high speed and with air conditioning.
What if I use fast chargers?
Enter the average price you really pay; if half your charging is at home and half at public chargers, average the two.
What does a negative saving mean?
The petrol car is cheaper to fuel at the prices you entered, which happens when electricity is expensive and fuel is cheap.