Fuel saving calculator
What switching to the best-value forecourt near you saves on a fill and over a year, after the extra miles are paid for. Prices are from official retailer data on 4 November 2026, UK average 171.0p unleaded and 198.2p diesel.
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Fuel savings: quick answers
How much can you save by shopping around for fuel?
A car doing 8,000 miles a year at 40 mpg burns about 909 litres. Every 1p a litre you knock off is £9.09 a year, so a 5p gap between your nearest station and the best one nearby is worth about £45 a year, and a 10p gap about £91. The calculator above uses the real prices around your postcode.
Is it worth driving further for cheaper fuel?
Only when the saving on the tank beats the fuel you burn getting there and back. Example at today's average of 171.0p: a station 4p cheaper but 2 miles further away saves £1.60 on 40 litres, costs about £0.76 in extra driving, and leaves you £0.84 better off. We do that sum for every station within reach and pick the one that leaves the most in your pocket.
How many litres of fuel does a car use a year?
Divide your yearly miles by your mpg to get gallons, then multiply by 4.546 for litres. 8,000 miles at 40 mpg is 909 litres, which is about 23 fills of 40 litres.
More ways to pay less
See every station near you on cheapest fuel near me, price a single trip with the fuel cost calculator, or read when the cheapest time to buy fuel is.