EV vs Petrol Cost per Kilometre Calculator
Compares the running cost of an electric vehicle and a petrol car per kilometre and shows the yearly saving over the distance you drive.
Enter your numbers
Example: 8
Example: 6
Example: 110
Example: 15
Example: 15000
Recent
Formula
How the calculation works
Enter your electricity price per unit and the EV efficiency in kilometres per unit, which most models state on the specification sheet.
Enter the petrol price per litre and the car's mileage in kilometres per litre for the comparison vehicle.
The tool divides price by efficiency for each fuel to get the cost per kilometre, subtracts the EV figure from the petrol one, and multiplies by your yearly distance for the annual saving.
Common mistakes
- Comparing only fuel and electricity while ignoring servicing, since an EV needs far less routine servicing and that widens the gap further.
- Using the best possible efficiency figure, because real-world efficiency drops in traffic and with air conditioning running.
When to use it
- Use it before buying a car so you can see whether the higher purchase price of an EV is offset by cheaper running.
- Use it to compare two models on the same annual distance, since efficiency and mileage change the result more than the sticker price.
Worked example
With electricity at 8 Taka per kWh and 6 km per kWh, the EV costs about 1.33 Taka per km, while petrol at 110 Taka and 15 km per litre costs about 7.33 Taka per km, saving 6 Taka per km and 90000 Taka over 15000 km.
Common questions
Does the calculator include the cost of charging losses?
No, it assumes the full unit price converts to kilometres directly, so with charging losses the real EV cost per kilometre is slightly higher than shown.
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