Fuel Cost Per Mile for a Truck at 15 MPG

A pickup truck averaging only 15 MPG at $4.00 per gallon costs about $0.267 per mile in fuel — a significant operating expense.

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How to use this tool

Enter the current price of fuel per gallon.
Enter your vehicle's fuel economy in MPG.
The calculator returns cost per mile and cost per 100 miles.

Full-size trucks are thirsty — calculate your exact fuel cost per mile to understand your daily driving expenses or compare with another vehicle.

Frequently asked questions

How do I calculate fuel cost per mile?: Divide the price per gallon by your MPG. For example, $3.50/gal ÷ 28 MPG = $0.125 per mile ($12.50 per 100 miles).
What is the IRS mileage rate?: The IRS standard mileage rate covers fuel, maintenance, and depreciation. For 2025 it is 70 cents per mile for business use. Fuel cost alone is typically 10–20 cents per mile.