Three inputs, one honest answer
The price difference alone can be misleading. We net it off against the fuel you'd burn getting there.
A few pence a litre, multiplied by your fill-up size, looks like real money.
Getting there and back burns fuel too — at your car's real-world mpg, not the optimistic official figure.
Subtract one from the other. Below a certain distance it's a clear win; beyond it, you're driving for nothing.
Fuel isn't the whole picture
The tool weighs pounds and pence — these are the extras worth a thought before a special trip.
Confirm the price at the pump before you set off — published forecourt prices can move through the day.
A bigger fill-up tips the maths in your favour: the saving scales with litres, the drive cost doesn't.
The maths is fuel-only — your time, and wear on the car, are on top of the figure shown.
Combine the trip with errands or a journey you'd make anyway and the drive cost all but disappears.
Frequently asked questions
How the worth-the-drive maths works.
Fuel prices come from official UK retailer data (gov.uk/CMA fuel-price transparency scheme), refreshed through the day. Always confirm the price at the pump before making a special trip.
Keep checking
Find the cheapest fuel near you
See every participating forecourt within 10 miles, ranked cheapest first, plus free price-drop alerts.
See fuel prices near you- Official gov.uk/CMA data
- Real driving distances