Fuel Cost Calculator

Work out what a journey will cost you in petrol or diesel. Enter your distance, your car's MPG and the current pump price.

How it works

Your car's MPG tells you how many miles it travels per gallon. We divide your distance by your MPG to get the gallons of fuel used, convert that to litres (there are 4.546 litres in an imperial gallon), and multiply by the pump price. The default price shown is the recent UK average, but pop in the exact figure from your local forecourt for a closer estimate. Not sure of your MPG? Most modern petrol cars sit around 40-55 MPG, diesels a little higher; check your car's official figure or your trip computer.

This calculator gives an estimate only and is provided for general guidance, not financial or motoring advice. It assumes UK imperial gallons (4.546 litres per gallon). Real-world fuel economy varies with your driving style, load, speed, traffic and conditions, and can differ noticeably from a car's official MPG figure, so treat the result as a guide rather than an exact cost. Pump prices change constantly and vary between forecourts and regions - check the price at your local station for a closer estimate. The yearly figure assumes you make the same journey every week. MotifyMe® accepts no liability for any loss arising from reliance on these estimates.

Thinking of changing your car?

Upgrading to something newer, cheaper to run or lower-emission? We can introduce you to vehicle finance through Presto Finance, and our calculator shows what your monthly payments might look like.

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Want live pump prices near you? Try our free Fuel Finder.