Vehicle
Petrol vs CNG vs EV Running Cost Calculator
Compare monthly running cost and savings across petrol, CNG and EV options.
Before you convert
Fuel choice changes monthly running cost. This calculator compares petrol, CNG and EV cost per kilometre for the distance you drive each month.
This calculator checks
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Inputs
Simple fields with validation.
Simple fields with validation.
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Result
Readable decision-ready output.
Readable decision-ready output.
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Method
Formula shown below the calculator.
Formula shown below the calculator.
Fast
Instant result
Instant result
India-ready
INR formatting
INR formatting
Clear
Detailed breakdown
Detailed breakdown
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Calculator
Enter running cost details
Use the inputs below to calculate a practical result.
Result
Actual cost summary
A clear view of principal, interest, GST and fees.
Petrol Monthly Cost
Cng Savings
Ev Savings
Petrol Monthly Cost
Cng Monthly Cost
Ev Monthly Cost
Detailed breakdown
Detailed result
Use these numbers to compare the headline result with the actual cost components.
Petrol Monthly Cost
Cng Monthly Cost
Ev Monthly Cost
Cng Savings
Ev Savings
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Formula and Methodology
Monthly cost for each fuel type is monthly kilometres multiplied by that option's cost per kilometre. Savings compare CNG and EV against petrol.
Use local fuel price, electricity tariff and real-world mileage for better estimates.
Use local fuel price, electricity tariff and real-world mileage for better estimates.
Worked Example
Example: For 1,000 km per month, petrol at ₹8/km, CNG at ₹4/km and EV at ₹1.50/km, the calculator shows monthly cost and savings.
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How to use this result
Use the result to compare options, ask better questions and avoid judging only by the headline number. If a fee, GST amount, deduction or assumption changes, update the input and calculate again.
FAQs
Yes. The inputs, labels and result formatting are designed for Indian users and show INR values where money is involved.
The result is a planning estimate based on the values you enter. Always verify final amounts with the relevant bank, employer, tax advisor, school, builder or official document.