Car ownership calculator
Petrol vs Diesel vs EV Total Cost of Ownership Calculator
Compare entered petrol, diesel and EV ownership assumptions side by side.
Use this calculator
What your result means
This applies the same full ownership-cost method to petrol, diesel and EV inputs.
Worked example
The figures below are illustrative editable assumptions.
- Petrol
- Fuel plus recurring costs
- Diesel
- Fuel plus recurring costs
- EV
- Electricity plus recurring costs
The calculator uses the same method with your inputs.
Formula
Comparison checklist
| Item | Use consistently |
|---|---|
| Ownership years | Yes |
| Annual miles | Yes |
| Resale assumption | Yes |
Using the result
Use like-for-like assumptions and update the inputs when your mileage, prices or agreement changes.
This estimate supports planning; it does not replace a quote, agreement or vehicle valuation.
Practical guidance
Compare the result alongside your own mileage and cashflow needs.
Check the underlying agreement or supplier terms before making a decision.
Assumptions and limitations
- Purchase price is not added on top of depreciation.
- Inputs are not current-rate claims.
Helpful questions
What does the Petrol vs Diesel vs EV Total Cost of Ownership Calculator calculate?
It calculates the entered assumptions using the method shown above.
Are example values current prices or quotes?
No. They are illustrative, editable values only.
Can I change the assumptions?
Yes. Use figures that reflect your vehicle, agreement or travel pattern.
Does the result predict the future?
No. Prices, efficiency, values and agreement terms can change.
What is excluded?
Read the assumptions before relying on the estimate for a decision. You can also use the Annual Car Mileage Calculator, Car Running Cost Calculator and Total Cost of Ownership Calculator for related planning inputs.
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