PetrolCalculator

Fuel calculator

Annual Fuel Cost Calculator

Estimate annual fuel spending from your mileage, UK MPG and entered pump price.

Use this calculator

Enter your mileage, UK MPG and fuel price to estimate fuel spending.

What your result means

Your annual fuel cost is driven by annual mileage, UK MPG and the pump price you enter. More miles and a higher price increase cost; higher MPG reduces the litres required.

Worked example

Example values are illustrative and editable in the calculator.

Annual fuel used
1,212.3 litres
Annual cost
£1,721.45

Higher MPG or a lower price reduces the estimate.

Formula

Annual cost=Annual milesUK MPG×4.54609×p/litre100\text{Annual cost}=\frac{\text{Annual miles}}{\text{UK MPG}}\times4.54609\times\frac{\text{p/litre}}{100}

Annual cost at 12,000 miles and 142p/litre

ScenarioEstimated result
30 UK MPG£2,582.18
40 UK MPG£1,936.63
50 UK MPG£1,549.31
60 UK MPG£1,291.09

Annual mileage scenarios at 45 UK MPG and 142p/litre

Annual mileageEstimated fuel cost
8,000£1,147.64
10,000£1,434.54
12,000£1,721.45
15,000£2,151.82
20,000£2,869.09

Assumptions and limitations

  • Fuel-only estimate: insurance, servicing, maintenance, VED/tax, depreciation and finance costs are excluded.
  • Use your measured real-world UK MPG and local pump price for the most useful estimate.

Helpful questions

Does this include all car running costs?

No. It estimates fuel only.

Which MPG should I use?

Use a measured real-world UK MPG where possible.

Can I use this for diesel?

Yes. Enter the diesel price and your vehicle’s UK MPG.

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