Diesel Hits $5.652, Its Highest Price Since July 2022
Diesel is the priciest in four years and two months. The national average rose 19.8 cents to $5.652 a gallon.
Diesel has not been this expensive since the summer of 2022. The national average for the week ending August 24, 2026 landed at $5.652 a gallon, up 19.8 cents from $5.454 the week before. That is the second consecutive week of nearly twenty cents, and it puts the pump within 15.8 cents of the all-time high.
The last time the weekly series printed a number above this one was July 4, 2022. Four years and two months ago. Everything since then has been under it, including the entire run of 2023, 2024 and 2025.
Two weeks did most of the damage
Four weeks ago, for the period ending July 27, the average was $5.313. Today it is $5.652: 33.9 cents in four weeks, a 6.38% climb. But the shape matters more than the total. Two of those four weeks moved 19.7 and 19.8 cents. The other two barely moved at all.
That is not a market drifting upward. That is a market repricing in steps, and steps are harder to absorb than drift, because a fuel surcharge negotiated three weeks ago is now covering a different price than the one it was written for.
The Gulf Coast took the biggest jump
The increase was not spread evenly. Padd 3 — the Gulf Coast, where Texas and Louisiana lanes live — rose 24.4 cents in a single week to $5.481, a 4.66% move and the sharpest of any region. It is still one of the cheaper places to fuel in the country, and it is the one that got more expensive the fastest.
The rest of the map:
- Most expensive region: Padd 5, the West Coast, at $6.407.
- Cheapest region: Padd 1C, the Lower Atlantic, at $5.350.
- The spread between them: $1.057 a gallon.
- California, the only individual state the series publishes, at $7.040.
A dollar and six cents of spread means where you fill is now a bigger decision than how you drive. On a 150-gallon fill, the same fuel costs about $159 more in the wrong region.
What it costs a real truck
Take a tractor at 6.5 miles per gallon running 2,500 miles a week. That is roughly 385 gallons. At last week's $5.454 the fuel cost about $2,100. At $5.652 it costs about $2,176.
Seventy-six dollars a week, same lane, same truck, same driver. Against the July 27 price it is about $130 a week. Against July 6, when the average was $4.578, it is roughly $413 a week — about $1,790 a month more for exactly the same work.
Run the arithmetic with your own mpg and your own miles before you accept anybody's average, this one included. The method is worth more than the example.
The number that decides whether the load is worth it
Spot linehaul is up year over year, and that is real. But a raise on the rate line and a raise on the fuel line are not the same size for every operator, and the difference is mpg.
At 6.5 mpg, this move costs 87 cents per mile in fuel. At 5.5 mpg, it costs $1.03. That gap — the same freight, the same week, the same price at the pump — is sixteen cents a mile that nobody negotiated. Over 120,000 miles a year it is more than $19,000.
Which is why the honest question when diesel prints a four-year high is not what the market will do next. It is what your truck does with a gallon, because that is the only half of this equation you control.
Twenty cents a gallon: is it time for an APU?
Idle is the clearest example. A truck parked overnight with the engine running is buying diesel at $5.652 and converting it into nothing but climate control. Take your own consumption per hour, multiply it by the hours you idle in a week, and multiply that by today's price. Most operators have never run that number, and it is usually larger than the repair they are postponing.
That arithmetic is the entire argument for an auxiliary power unit, and it gets stronger every time the pump does. Go Green APU exists for exactly that math.
And the install is the easy part. The Truck Savers puts the unit on your truck in Houston, Dallas and Monterrey — same shop that does the alignment, so the truck goes in once.
The preventive read
Fuel economy is not a driving style. It is an equipment condition. Dragging brakes, misaligned axles, worn suspension and under-inflated tires all pull mpg down quietly, and at $5.652 a gallon every tenth of a mile per gallon is money leaving the account every week.
An inspection tells you what the unit is actually doing before the fuel card tells you. At The Truck Savers that is the whole point of the road simulator and the alignment: the truck cannot argue with the numbers. Los fierros nunca mienten.
Prices and periods taken from the weekly series: U.S. Energy Information Administration, Weekly Retail On-Highway Diesel Prices, period ending August 24, 2026.