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Compare approximate annual energy cost for a petrol car vs an EV using mileage, efficiency, fuel price, electricity price, and a one-time EV price premium.
Quick answer: EV vs Petrol Cost Calculator
Annual energy cost from MPG or kWh/100km vs electricity rate, then multi-year totals with purchase premium.
Example: 12k miles, 28 MPG vs 3 mi/kWh at home rates might show EV fuel savings overtaking premium by year X.
Calculations follow the documented formula on this page; rounding and input units can change the last digit-treat outputs as educational estimates unless you reconcile with source systems.
* This is an estimate. Actual amounts may vary slightly based on input assumptions.
Maintenance and depreciation are excluded unless you interpret extras manually; CO₂ uses static grid or fuel factors.
Compare approximate annual energy cost for a petrol car vs an EV using mileage, efficiency, fuel price, electricity price, and a one-time EV price premium.
Inputs on this page: Annual distance, Distance unit, Petrol efficiency measure, Petrol efficiency value. Assumptions stay visible so you can reproduce the figure elsewhere.
Long-form walkthroughs that pair well with this calculator. When you need narrative context beyond the live fields, start here and return to the tool to plug in your own numbers.
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Read guide →People who care about EV vs gas cost use EV vs Petrol Cost Calculator as a planning sandbox: Public DC fast charging can erase savings vs home overnight rates.
Continue in the Calculators category hub, the Utility tools collection, or the glossary. Related calculators in this session: Loan Calculator, Gas Cost Calculator Road Trip, Carbon Footprint Calculator, Solar Panel Savings Calculator, Percentage Calculator, BMI Calculator.
The Formula
Petrol L from MPG/L100km; EV kWh from miles×kWh/100mi; compare annual cost + premium| This tool | Petrol L from MPG/L100km; EV kWh from miles×kWh/100mi; compare annual cost + premium |
|---|---|
| Related intent: EV vs gas cost | See paired tools for EV vs gas cost-each page documents its own core relationship next to the live form. |
| Related intent: electric car savings | See paired tools for electric car savings-each page documents its own core relationship next to the live form. |
Core relationship for EV vs Petrol Cost Calculator:
Petrol L from MPG/L100km; EV kWh from miles×kWh/100mi; compare annual cost + premium
Worked check: 12k miles, 28 MPG vs 3 mi/kWh at home rates might show EV fuel savings overtaking premium by year X.
Keep the same assumptions and open a neighbor calculator when your question branches: Loan Calculator, Gas Cost Calculator Road Trip, Carbon Footprint Calculator, Solar Panel Savings Calculator. Each page documents its own formula beside the fields.
Learning links: Methodology · Editorial policy · Glossary
12k miles, 28 MPG vs 3 mi/kWh at home rates might show EV fuel savings overtaking premium by year X.
Re-enter the same numbers in the calculator above to confirm the page math matches the interactive result.
People who care about EV vs gas cost use EV vs Petrol Cost Calculator as a planning sandbox: Public DC fast charging can erase savings vs home overnight rates.
Instant response
Run EV vs Petrol Cost Calculator in the browser and read the breakdown beside the form.
Transparent formula
The formula and worked example on this page match what the calculator uses.
Privacy friendly
No account required; inputs stay in your session unless you choose to share them.
Cross-device ready
Layout works on mobile, tablet, and desktop for the same field labels.
Official references for context. Calculator outputs are planning estimates—confirm material decisions with the primary authority or a qualified professional. See our methodology and editorial policy.
Reviewed July 18, 2026 · Content stamp 2026-07-18
Click a question to expand the answer.
Yes, the EV vs Petrol Cost Calculator is completely free with no hidden limits.
Yes. All tools are optimized for desktop, tablet, and mobile devices.
Totals appear as numbers in the results list for this layout.
Annual energy cost from MPG or kWh/100km vs electricity rate, then multi-year totals with purchase premium.
12k miles, 28 MPG vs 3 mi/kWh at home rates might show EV fuel savings overtaking premium by year X.
Public DC fast charging can erase savings vs home overnight rates. Cold weather cuts EV range; long trips need planning. Tax credits change TCO - refresh policy yearly.
No. Use it as a transparent planning check, then verify critical outcomes in your own systems or with a qualified professional when stakes are high.
Compare units, rounding, compounding, and tax basis side by side. This page documents: Petrol L from MPG/L100km; EV kWh from miles×kWh/100mi; compare annual cost + premium
Same-category picks first, then high-intent neighbors that often answer the next calculation question.
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Reviewed by Toollabz Editorial
Product editor | Last reviewed July 18, 2026
See methodology and editorial policy.