How this calculator helps
A useful comparison needs round-trip miles, days each week, vehicle fuel economy and the local price per litre. This calculator uses the UK imperial gallon, not the smaller US gallon.
Before you decide
Fuel spending is only one component of driving costs. Allow separately for parking, maintenance, tax, depreciation and insurance.
A practical example
A UK imperial gallon is 4.54609 litres. For 42 miles per UK gallon, each 42 miles uses about 4.55 litres of fuel.
Frequently asked question
Does this calculate the full cost of owning a car?
No. It calculates fuel only, using a 52-week year. Subtract holiday weeks if you need a more specific estimate.
What next?
Change the figures and see the estimate update instantly. For another practical check, browse our free tools library or try the daily challenge.