Journey fuel cost calculator
What a trip costs in fuel, one way or return, at today's median petrol and diesel prices. Split it between passengers if you share the cost.
Prices checked 3 Nov 2026, 06:51
Prices start at the UK median on 3 Nov, across every station with a current price. Search for your town or postcode and this page will use prices near it next time, or type the price at your local station.
Estimated fuel cost
One way: 100 miles, at 45 mpg.
- Petrol (E10)£17.1610.1 litres at 169.9p a litre
- Diesel£20.0910.1 litres at 198.9p a litre
At the median price across the UK, the same trip would cost about £19.08 on super unleaded or £22.01 on premium diesel.
These are estimates. Real fuel use depends on your speed, traffic, load and the weather, and prices vary from station to station.
How it is worked out
Fuel used is the distance divided by your fuel economy in miles per UK gallon, times 4.546 (the litres in a gallon). The cost is the fuel used times the price per litre, shared equally if you split it. Use the distance by road, for example from a route planner.
Your fuel economy is remembered on this device with your savings settings, so place pages use it too. It is never sent to us.
For prices near you, search your town or postcode. Spotted a wrong price? Report a discrepancy to the government's Fuel Finder service.