Truck MPG calculator

Find your real MPG and what a better one is worth

Enter the miles driven and the gallons you bought to get your true fuel economy. Then set a target MPG to see what closing the gap saves you each year.

Your fuel economy

From a fill-up, a week or a month
mi
gal

What a better MPG is worth

Your fleet over a year
MPG
mi
trucks
$/gal

The starting numbers are an example: one week of driving for a Class 8 tractor, and a five-truck fleet at the U.S. average diesel price for the week of October 26, 2026. Replace them with your own.

MPG is miles divided by gallons. For the most accurate number, fill the tank all the way at the start and the end, and count every gallon bought in between.

Which trucks are dragging your MPG down?

We review fuel economy, idle time and spec by unit, compare it to fleets like yours, and show you which trucks and drivers to start with.

Request a fleet cost analysis