Diesel over $6.50 a gallon: your real cost per mile

Diesel is the biggest variable cost in a livestock haul, and right now it’s climbing fast. If you’re still pricing loads off last year’s fuel math, you’re leaving money on the table — or worse, running some lanes at a loss. Here’s the current number, and how to turn it into a rate that actually covers you.

What is the current diesel price in the US?

The US on-highway diesel average was $6.529 per gallon for the week of September 21, 2026, according to the EIA — up about 41% from a year earlier. That’s the national retail average the whole freight industry prices against. It’s been climbing week over week (from about $5.97 at the start of September), and it sits $2.78 higher than the same week last year.

Is diesel cheaper in the Southern Plains?

Yes — the Gulf Coast region (PADD 3), which covers Texas, Oklahoma, and the Southern Plains, is the cheapest in the country at about $6.18 per gallon, versus $7.46 on the West Coast. If you run the Amarillo–OKC–Fort Worth corridor, you’re fueling in the lowest-cost region — a real advantage worth factoring into what you can competitively quote.

How do I calculate my fuel cost per mile?

Divide the diesel price by your truck’s miles per gallon. At $6.53/gal and 6 MPG — realistic for a loaded livestock pot — that’s about $1.09 per mile in fuel alone, before you’ve covered the truck, insurance, your time, or a dollar of profit. At 5.5 MPG it’s about $1.19/mile; at 7 MPG, about $0.93. Run your own MPG — that one number moves your cost more than anything else.

What rate per mile do I need to cover high diesel?

Your rate has to clear fuel cost plus every other per-mile cost, so at today’s diesel a livestock rate that looked fine a year ago may not cover the run. Fuel is only one layer — add your fixed cost per mile (truck payment, insurance, maintenance) and your target margin. The point isn’t a single magic number; it’s that a $6.53 diesel environment pushes your break-even up hard, and the rate you accept has to move with it. Our free freight-cost calculator lets you plug in the rate, miles, and your cost per mile to see the net before you take the load.

Why do old “$2–$4.50 a mile” rate figures no longer hold?

Most published livestock-rate ranges come from surveys taken when diesel was far cheaper, so they understate today’s real cost. A widely-cited university extension figure put livestock hauling around $2–$4.50 per loaded mile — but that was gathered in a lower-diesel year. With fuel alone now running over $1/mile, those old ranges are a starting reference at best. Price off your current costs, not a stale survey.

The honest note

Diesel prices change weekly — the $6.53 figure is the EIA average for the week of September 21, 2026; check the current EIA number before you quote. This is a guide to doing your own math, not a set rate. Your MPG, your fixed costs, and your lane determine what you need.