Fuel Cost Calculator

Work out exactly what your journey will cost — petrol, diesel or electric

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📊 Today's UK Average Prices

Prices based on UK average. Your local station may vary.

📋 How It Works

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Enter your trip

Type how many miles you're driving — from a quick run to a full UK road trip.

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Pick a vehicle

Choose from common UK cars & vans or enter your exact MPG. Most cars average 45 mpg.

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Fuel price auto-filled

We use current UK averages. Override if you know a cheaper station near you.

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Compare with EV

See what the same trip costs on electric. Most drivers save 60-70% per mile.

❓ Quick Questions

How accurate is this? +

Within 5-10% of your real cost. Best results when you use your car's actual MPG (not the official figure, which is usually higher) and your local fuel price.

UK or US gallons? +

UK (Imperial) gallon — 4.546 litres. US gallons are different (3.785 L). This tool is UK-specific.

What MPG for a van? +

Ford Transit Custom: 30-35 mpg. VW Transporter: 30-34. Mercedes Sprinter: 28-32. Real-world is always lower than the manufacturer's number, especially when loaded.

Petrol vs diesel vs EV? +

EVs are roughly 3-4x cheaper per mile at current UK prices. Diesel is about 10-15% more efficient than petrol but costs more per litre. Use the tabs above to compare your specific journey.