Fuel Cost Calculator – How Much Will the Fuel Cost?
Enter the distance, your car's MPG and the pump price to see the fuel cost. Prices are examples - change them to what you pay.
Your journey
Fuel price
Example price - enter what you pay
£13.64 in fuel
For 100 miles at 45.0 mpg.
Uses UK gallons (4.546 litres). Real-world MPG is often 10-20% below the official figure.
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How do I calculate fuel cost?
Divide the miles by the MPG to get gallons, multiply by 4.546 to get litres, then multiply by the price per litre.
Why is my real MPG lower than the official figure?
Official figures come from standardised lab tests. Short trips, motorway speeds, cold weather and roof boxes all reduce real-world MPG.