EV vs Petrol Car Calculator
Compare the yearly running costs of an electric car against a petrol or diesel car.
About the EV vs Petrol Car Calculator
EVs are typically 3–4 times more energy-efficient than combustion cars, and electric motors need less maintenance (no oil changes, less brake wear thanks to regenerative braking). Savings depend heavily on your electricity tariff versus fuel price; frequent public rapid charging narrows the gap.
The formula
Yearly cost = distance × energy use × price + maintenance
Worked example
Example: EV saves per year = $851
- Inputs: Distance per year: 13,000 km or miles; Units: miles, mpg, kWh/100 mi; Petrol car fuel use (L/100 km or mpg): 33; Fuel price per litre or gallon: $3.5; EV energy use (kWh per 100 km or 100 mi): 33; Electricity price per kWh: $0.2; Petrol car maintenance per year: $990; EV maintenance per year: $660.
- Formula: Yearly cost = distance × energy use × price + maintenance
- Result: EV saves per year = $851
Things to keep in mind
- Purchase price, depreciation, insurance and incentives aren't included; use the car cost of ownership calculator for a full comparison.
Questions people ask
What's a typical EV efficiency?
About 15–20 kWh per 100 km (25–33 kWh per 100 miles).
Do EVs cost more to insure?
Often somewhat, due to repair costs; get quotes.