Formula
Petrol annual cost = annual km / 100 x L/100km x fuel price. EV annual cost = annual km / 100 x kWh/100km x electricity price. Saving = petrol cost - EV cost. Payback = EV premium / annual saving.
Automotive
EV vs Petrol Running Cost Calculator
Compare annual petrol and electric vehicle energy costs and estimate payback on an EV price premium.
Calculator
Working calculator
Live result$1,794.00/yearPetrol $2,550.00/year; EV $756.00/year; EV premium payback 2.8 years.
Formula used
Petrol annual cost = annual km / 100 x L/100km x fuel price. EV annual cost = annual km / 100 x kWh/100km x electricity price. Saving = petrol cost - EV cost. Payback = EV premium / annual saving.
This is the method behind the answer, so the result can be checked rather than simply trusted.Visual grid
This number is one point on a larger pattern
EV vs Petrol Running Cost is not just a final answer. It is a step on a line: before and after, input and output, assumption and result.
Micro-timehours, minutes, shiftsHuman scaledays, weeks, projectsMacro-timemonths, years, calendars
InputFormulaResult
$1,794.00/yearCalculationTime keeps the path visible: the input, the method and the final number belong together.
CalculationTime
EV vs Petrol Running Cost Calculation Report
$1,794.00/yearPetrol $2,550.00/year; EV $756.00/year; EV premium payback 2.8 years.
Inputs
- Annual distance
- 15,000 km
- Petrol use
- 8.5 L/100km
- Fuel price
- 2 $/L
- EV energy use
- 18 kWh/100km
- Electricity price
- 0.28 $/kWh
- EV premium over petrol equivalent
- 5,000 $
Method
Petrol annual cost = annual km / 100 x L/100km x fuel price. EV annual cost = annual km / 100 x kWh/100km x electricity price. Saving = petrol cost - EV cost. Payback = EV premium / annual saving.
- At 15,000 km, 8.5 L/100km and $2/L, petrol costs $2,550/year. At 18 kWh/100km and $0.28/kWh, EV electricity costs $756/year.
Assumptions
- This calculator is for planning and education, not legal, tax, medical, immigration, engineering or financial advice.
- Use current official rates, contracts, carrier terms, statutes or professional guidance before relying on the result.
- The default values are examples. Replace them with the figures from the job, invoice, contract, bill, service or record being checked.
Notes
Use this space on the printed report for client, supplier, classroom, job-location, measurement, quote or approval notes.
Worked example
At 15,000 km, 8.5 L/100km and $2/L, petrol costs $2,550/year. At 18 kWh/100km and $0.28/kWh, EV electricity costs $756/year.
Professional note
Professional note: print the input values, formula, result and date together so the calculation can be reviewed later.
Regional and unit assumptions
Basis: transparent planning arithmetic using the visible inputs and assumptions on this page.
Assumptions and limitations
- This calculator is for planning and education, not legal, tax, medical, immigration, engineering or financial advice.
- Use current official rates, contracts, carrier terms, statutes or professional guidance before relying on the result.
- The default values are examples. Replace them with the figures from the job, invoice, contract, bill, service or record being checked.
Methodology & Accuracy
How this calculator is checked
CalculationTime pages are built around visible arithmetic: the formula, assumptions, worked example and practical limitations are shown so the result can be checked rather than simply trusted.
Formula used
Petrol annual cost = annual km / 100 x L/100km x fuel price. EV annual cost = annual km / 100 x kWh/100km x electricity price. Saving = petrol cost - EV cost. Payback = EV premium / annual saving.
Standard or basis
Basis: transparent planning arithmetic using the visible inputs and assumptions on this page.
Where a calculator follows a named legal, trade or industry standard, that standard is cited visibly. Otherwise the page uses transparent general arithmetic and states its limits.Master's Tip
Professional note: print the input values, formula, result and date together so the calculation can be reviewed later.
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Questions
What is the EV vs Petrol Running Cost Calculator?
This EV running cost calculator compares petrol fuel spend against electricity spend for the same annual kilometres.
Can I rely on this as professional advice?
No. Use it as a transparent planning estimate, then verify the current rule, rate, contract or official source for the decision you are making.