Reduce Diesel Fuel Costs: every truck you don't need to run is fuel cost you don't pay.

The fastest way to reduce diesel fuel costs is to run fewer trucks for the same freight. U.S. diesel averaged $6.529/gal the week of September 21, 2026 (EIA), above the 2022 record. LevelLoad keeps freight on core carriers 30 days out; AutoO₂ fills every truck to its legal limit.

Diesel Price Update: September 2026
Run a Fuel Exposure Check
By ProvisionAi · Updated · 4 min read
LevelLoad dashboard that helps shippers reduce diesel fuel costs by running fewer trucks
Key Takeaways
  • U.S. on-highway diesel averaged $6.529/gal the week of September 21, 2026, up 23% from $5.313 on July 27 and above the 2022 record of $5.810 (EIA).
  • To reduce diesel fuel costs, two levers are fully in a shipper's control: staying on core contract carriers, and using all the capacity of every truck you pay for.
  • LevelLoad smooths the network 30 days out (~4% replenishment freight savings); AutoO₂ fills every truck to its legal limit (5–10% freight cost reduction per lane, 98% truck utilization).

How much has diesel gone up in 2026?

U.S. on-highway diesel averaged $6.529 per gallon the week of September 21, 2026, up 23% from $5.313 on July 27 and above the 2022 record of $5.810 set on June 20, 2022, according to the U.S. Energy Information Administration (EIA). Tight diesel supply, low distillate inventories and refinery disruptions are driving the increase (Engine Technology Forum). As a result, all-in truckload spot rates rose for van, reefer and flatbed the week of September 13 to 19 (DAT).

$6.529
per gallon, U.S. diesel,
week of Sept 21, 2026
+23%
since
July 27, 2026
~4%
replenishment freight
savings (LevelLoad)
5–10%
freight cost reduction
per lane (AutoO₂)
98%
truck
utilization

Diesel prices: EIA weekly U.S. No. 2 diesel retail prices, released September 22, 2026. Supply drivers: Engine Technology Forum, September 17, 2026. Spot rates: DAT Truckload Market Report, September 13 to 19, 2026. Savings figures: ProvisionAi customer results.

The problem LevelLoad solves

Why does lumpy replenishment raise transportation costs?

Because peak days exceed core carrier capacity: tenders get rejected and freight moves to spot carriers at a premium, right when diesel is most expensive. When APS systems trigger replenishment by inventory threshold, shipments pile up at end of week, and it was all predictable 30 days earlier.

LevelLoad maximizes use of core carriers
Daily truck volumes: without LevelLoad shows frequent spikes above the carrier capacity limit of 9 trucks; with LevelLoad shows smooth, near-uniform distribution through transportation smoothing.

With LevelLoad: daily volume stays at or just under the capacity line, so freight stays with core contract carriers and no spot trucks are needed.

60%Variability reduction
97%Tender acceptance
~4%Freight cost savings

60%: Kimberly-Clark, North American operations (case study). 97% first tender acceptance and ~4% freight savings: typical LevelLoad deployment results.

Smooth the network Fill every truck Save money.

The Opportunity

Why does it pay to reduce diesel fuel costs when prices hit a record?

Because every underfilled truck and every spot truck pays full price for fuel, so waste that was tolerable at $3.75 a gallon a year ago becomes expensive at $6.53 (EIA).

⛽
Every unused mile costs more

Unused legal payload capacity means paying full fuel price to move less freight per truck: the same diesel bill for a lighter load.

🚚
More trucks, more fuel bills

It's that simple. Every extra truck on the road is another tank of record-priced diesel.

📈
Volatility gets expensive fast

Uneven daily freight volume forces rejected tenders and costly spot-market recovery, right when spot capacity is tightest.

How do you reduce diesel fuel costs with core carriers?

Run fewer trucks for the same freight: level volume 30 days out with LevelLoad so it stays on core carriers, then fill every truck to its legal limit with AutoO₂.

  1. 01
    Ingest constraints

    APS, ERP, TMS, WMS, space, labor and carriers.

  2. 02
    Level the flow

    Smooth lanes, sites, carriers and days 30 days out (LevelLoad).

  3. 03
    Fill every truck

    Optimize payload, axle, stacking and sequence on what ships (AutoO₂).

  4. 04
    Show the dock how to execute

    3-D load plans speed loading and maximize capacity.

What transportation cost reduction have shippers achieved?

ProvisionAi customers have cut freight cost 5–10% per lane (Riviana Foods, with AutoO₂) and reduced daily shipment variability 60% across North American operations (Kimberly-Clark, with LevelLoad).

Customer Proof
Across the ProvisionAi client base
$160M
annual freight savings
98%
truck utilization
88,000
truck journeys eliminated
285,000
tons of CO₂ reduced annually

How does a Fuel Exposure Check help reduce diesel fuel costs?

It shows how much of your network's fuel spend is inside your control, and how many trucks LevelLoad and AutoO₂ could take off the road.

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