Fuel savings calculator
See what a cheaper fill-up adds up to. Enter what you pay now, how much cheaper you can find it, and how much fuel you use.
This calculator needs JavaScript. The formula and a worked example are below.
Result
- You save per month
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- You save per year
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- Fuel per month
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- Cheaper by
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- New price per litre
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How it is calculated
Saving per month = litres bought per month × how much cheaper each litre is. Saving per year = saving per month × 12.
No litres to hand? Enter miles and consumption instead: litres = miles × 1.609344 ÷ 100 × l/100 km, and l/100 km = 282.48 ÷ mpg (UK gallons).
Worked example
You buy 80 litres a month and find fuel 5p a litre cheaper. 80 litres × £0.05 = £4.00 a month, which is £48.00 a year.
Prices are per litre. The average price is the country average for the fuel you pick; change it to the price at your station.