Calculate the petrol or diesel cost of a UK journey using distance, imperial MPG and fuel price.
Worked example
A 120-mile journey at 45 MPG uses about 12.1 litres. At 145p/litre, the estimated fuel cost is about £17.58.
Frequently asked questions
Does this use UK or US MPG?
UK imperial MPG. US gallons are smaller, so US MPG figures are not directly interchangeable.
Should I use official or real-world MPG?
Real-world MPG usually gives a more useful cost estimate for your own car.
Related calculators