Annual mileage cost
Annualise a fuel or energy unit rate: multiply your cost per mile by yearly mileage to estimate an annual budget, with a monthly average. First get the per-mile rate from the EV cost-per-mile or petrol/diesel journey calculators; this is not a single-trip cost calculator.
Result
Annual fuel/energy cost
Monthly average
How to use this tool
- Work out your cost per mile first, using the EV cost-per-mile or a petrol/diesel journey calculator.
- Enter your typical annual mileage.
- Enter the cost per mile in pence.
- Read the annual and monthly fuel/energy budget.
Assumptions
- Assumes a constant cost per mile across the year — real costs vary with fuel/electricity price changes and seasonal efficiency differences.
Technical details: what the fields mean
- Annual mileage
annualMiles - Your typical yearly mileage.
- Cost per mile
costPerMilePence - Fuel or energy cost per mile, in pence — get this from the EV cost-per-mile calculator or a journey-cost calculator.
Methodology
Annual cost = (annual miles × pence per mile) ÷ 100. Monthly average = annual cost ÷ 12.
Worked example
10,000 miles/year at 7.5p/mile
Inputs: Annual mileage: 10000 miles, Cost per mile: 7.5p
Result: £750.00/year, £62.50/month
Practical guidance
- Re-run this whenever fuel or electricity prices change significantly — your cost-per-mile figure isn't fixed.
- Use this alongside insurance, servicing and road tax figures for a fuller annual motoring budget.
Common mistakes
- Using an out-of-date cost-per-mile figure after fuel or electricity prices have changed.
FAQs
What's the annual fuel cost for 10,000 miles at 7.5p/mile?
£750 per year, or about £62.50 per month.
Last reviewed: 2026-10-11
Fuel/energy cost only — does not include insurance, servicing, road tax or depreciation.
This tool provides an indicative estimate, based on the assumptions stated above.
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