Free tool
Truck MPG calculator
Half a mile per gallon is worth thousands of dollars a year. See how much.
Your MPG—
Fuel cost per year now—
Fuel cost per year at target—
Yearly savings—
How to use it
Fill up to full, note the odometer, then at the next full fill-up divide miles by gallons. The yearly savings show what a target MPG is worth, which helps when deciding on speed, idling and maintenance.
Questions carriers ask
What's a good MPG for a semi?
Many modern tractors average roughly 6–8 MPG depending on load, speed, terrain and equipment.
What improves MPG most?
Lower cruising speed, less idling, proper tire pressure and aerodynamic trailer gear.