Compare Fuel Costs Between Cars
See how much a more efficient vehicle would save on the same trips.
miles per gallon (mpg)
💡 Amounts are shown in your fuel-price currency — the number is currency-agnostic, so it works for $, £, €, or any other. Real-world consumption varies with speed, terrain, load, and weather, so treat this as a close estimate.
Compare Cars tips
Run the same distance with two different mpg figures to see the cost gap.
The jump from 20 to 30 mpg saves more fuel than 40 to 50 mpg — efficiency gains shrink at the top.
Annualize the difference (× your yearly mileage) to judge whether a swap is worth it.
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Estimate Road Trip Fuel Cost
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Fuel Cost in Litres & Kilometres
Calculate cost using L/100km or km/L and price per