Rates & sources
DVLA, HMRC fuel advisory rates and manufacturer-published figures. Real-world results vary by driving style.
Source: DVLA / HMRC fuel advisory rates — figures refreshed at the start of each tax year.
When to use this calculator
- When you need a fast estimate before making a bigger decision.
- When you want to compare a few scenarios using the same assumptions.
- When you need a clearer starting point before using a detailed quote or formal document.
A realistic US planning example
Use these sample inputs as a quick scenario test, then change one variable at a time to compare outcomes.
Battery Capacity (kWh)
4.5 kW
Full Charges Per Week
2
Electricity Price ($/kWh)
4.5 kW
Range Per Full Charge (miles)
200
After entering these figures, compare cost per charge, monthly and annual before deciding which scenario looks strongest.
How to read your results
Cost Per Charge
Use this metric to compare scenarios side by side and understand how the key drivers affect the final outcome.
Monthly
Use this metric to compare scenarios side by side and understand how the key drivers affect the final outcome.
Annual
Use this metric to compare scenarios side by side and understand how the key drivers affect the final outcome.
Per Mile
Use this metric to compare scenarios side by side and understand how the key drivers affect the final outcome.
Method & assumptionsAuthoritative sources
Common mistakes
- !Using optimistic assumptions without testing a more cautious scenario as well.
- !Comparing outputs from different tools without checking that the inputs match.
- !Treating the result as a final quote instead of a planning estimate.
What to do next
- Try at least one more scenario so you can compare a realistic range instead of a single estimate.
- Use the related calculators below to cross-check the decision from another angle.
- Open one of the linked guides if you need more context before you act on the result.
Frequently asked
Use arrow keys to navigate items, Enter or Space to expand/collapse.
End-of-article next steps
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