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Calculate trip, monthly, and annual fuel costs. Compare two vehicles to see annual savings.
Fuel cost is the total expense of gasoline or diesel consumed over a trip or time period, calculated from distance traveled, vehicle fuel economy, and current fuel price. Comparing vehicles by annual fuel cost is a key factor in total cost of ownership.
Gas price per gallon →
| MPG | $3.00 | $3.50 | $4.00 | $4.50 |
|---|---|---|---|---|
| 20 | $0.150 | $0.175 | $0.200 | $0.225 |
| 25 | $0.120 | $0.140 | $0.160 | $0.180 |
| 30 | $0.100 | $0.117 | $0.133 | $0.150 |
| 35 | $0.086 | $0.100 | $0.114 | $0.129 |
| 40 | $0.075 | $0.088 | $0.100 | $0.113 |
Formula
Fuel Cost = (Distance ÷ MPG) × Price per GallonDistance = trip distance in miles (or km when using metric)
MPG = miles per gallon (or L/100km for metric)
Price per Gallon = current local fuel price in USD per gallon
Worked Example
300-mile road trip, 28 MPG, $3.50/gallon gas
Did you know? The U.S. Department of Energy estimates that improving fuel economy from 20 to 25 MPG saves approximately $400/year at typical US driving distances (15,000 miles/year) and $3.50/gallon gas prices.
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