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EV vs Petrol Cost Calculator
EV vs gas cost
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.
On this page (tap to expand)
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.
What this calculator does
- EV vs Petrol Cost Calculator
- Fuel-only TCO sketch, break-even year, and rough CO₂ difference.
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.
When to use it
- Use EV vs Petrol Cost Calculator when you need a transparent EV vs gas cost answer before you commit numbers to a spreadsheet, invoice, or conversation.
- Reach for it when you already know (or can estimate) Annual distance and want the dependent result without rebuilding the formula by hand.
- Skip it when you need certified advice, signed-off payroll, or a lender’s official quote—those require the primary institution’s systems.
Key takeaways
- 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.
How to use this tool
- 1Match efficiency units to the car you drive today.
- 2Set electricity to your home or public-charging average.
- 3Premium is the extra you pay for the EV before incentives - results ignore tax credits.
Guides and explainers
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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Practical scenarios
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 Utility tools collection or the glossary. Related calculators in this session: Carbon Footprint Calculator, Solar Panel Savings Calculator, Gas Cost Calculator Road Trip, Loan Calculator, 1 Rep Max Calculator, Acres to Hectares Converter.
Key formula explained
How the calculation works
The Formula
Petrol L from MPG/L100km; EV kWh from miles×kWh/100mi; compare annual cost + premium- Annual distance: the value you enter for annual distance.
- Distance unit: the value you enter for distance unit.
- Petrol efficiency measure: the value you enter for fuel eff type.
- Petrol efficiency value: the value you enter for fuel eff value.
- Fuel price is per: the value you enter for fuel price unit.
- Fuel price (per gallon or litre): the value you enter for fuel price.
| 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.
Related calculations
Keep the same assumptions and open a neighbor calculator when your question branches: Carbon Footprint Calculator, Solar Panel Savings Calculator, Gas Cost Calculator Road Trip, Loan Calculator. Each page documents its own formula beside the fields.
Learning links: Methodology · Editorial policy · Glossary
Worked real-world example
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.
Who uses this tool?
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.
Common mistakes
- For EV vs Petrol Cost Calculator, mismatched units or periods (monthly vs annual, % vs decimal) are the fastest path to a believable wrong answer on EV vs gas cost.
- Watch for this pitfall: Cold weather cuts EV range; long trips need planning.
- If you paste the result into a decision doc, note the formula and the page date (2026-07-18) so teammates can reproduce it.
References & sources
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.
- Toollabz methodology — How we document formulas and update pages
- NIST — SI units
Content last updated 2026-07-18
FAQs
Click a question to expand the answer.
Is the EV vs Petrol Cost Calculator free to use?
Yes, the EV vs Petrol Cost Calculator is completely free with no hidden limits.
Can I use EV vs Petrol Cost Calculator on mobile?
Yes. All tools are optimized for desktop, tablet, and mobile devices.
Why no bar chart?
Totals appear as numbers in the results list for this layout.
What does EV vs Petrol Cost Calculator calculate in plain English?
Annual energy cost from MPG or kWh/100km vs electricity rate, then multi-year totals with purchase premium.
Can you show a worked example for EV vs Petrol Cost Calculator?
12k miles, 28 MPG vs 3 mi/kWh at home rates might show EV fuel savings overtaking premium by year X.
What are the most important tips when using EV vs Petrol Cost Calculator?
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.
How does EV vs Petrol Cost Calculator arrive at the result?
Maintenance and depreciation are excluded unless you interpret extras manually; CO₂ uses static grid or fuel factors. Formula reference: Petrol L from MPG/L100km; EV kWh from miles×kWh/100mi; compare annual cost + premium
Next step
Open the full directory, browse your hub collection, or jump back to this category. Bookmark the page if you use it often.
Built and maintained by Imtiaz Ahmad
Founder and lead engineer | Content updated July 18, 2026
See methodology and editorial policy.