Fuel Cost Per Mile at $5 Gas
With gas hitting $5 per gallon, a 25 MPG car costs $0.20 per mile in fuel — nearly double what it cost at $2.50 per gallon.
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.
When gas prices surge to $5 per gallon, the per-mile cost becomes a real concern — calculate how much each mile is costing you.
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.