Enter your car's miles per gallon and the pump price in pence per litre, and this works out what your fuel actually costs per mile. Add your annual mileage to see the yearly fuel bill.
Fuel is sold by the litre but economy is quoted in miles per gallon, so the 4.546 converts between them. Driving style changes the result as much as the pump price: see hypermiling for the habits that lift mpg. If you are weighing up an electric car, compare this figure with the EV charging cost calculator and the EV running cost vs petrol guide.
Common questions
How do I work out fuel cost per mile?
Multiply the pump price in pence per litre by 4.546 to get the cost per gallon, then divide by your mpg. At 140p a litre and 45 mpg that is about 14.1p per mile.
What is a good cost per mile?
For a petrol car, anywhere from about 12p to 18p per mile is typical depending on economy and fuel price. A frugal diesel can dip below that; a thirsty petrol or short cold trips push it higher.