Diesel Breaks $5/Gallon — Strait of Hormuz Crisis Sends Prices Soaring

U.S. national average diesel hits $5.07/gal (California $6.43) due to Iran's near-complete blockade of Strait of Hormuz. Go Green APU can save $1,000+/month at these prices.

Diesel Breaks $5 Per Gallon in the U.S.

This week, diesel in the United States reached a national average of $5.07 per gallon, according to data from the EIA (Energy Information Administration) as of March 16, 2026.

This price represents a $1.27 increase compared to the same period in 2025 and is $1.04 higher than in 2024. GasBuddy also reported the median U.S. diesel price at $4.99 per gallon.

Regional Variations — Third Week of March 2026

• East Coast: $5.10
• Midwest: $4.97
• Gulf Coast: $4.83
• Rocky Mountain: $4.79
• West Coast: $5.85
• California: $6.43 (most expensive)
• Oklahoma: $4.28 (least expensive)

Why Is Diesel So Expensive?

The conflict in the Middle East and Iran's near-complete blockade of the Strait of Hormuz have severely disrupted global oil supplies.

The Strait of Hormuz is a critical waterway through which approximately one-fifth of the world's oil trade passes. This blockade has driven up crude oil prices globally, which in turn has pushed diesel prices higher in all markets.

Analysts describe this crisis as an "unprecedented energy shock" affecting both oil and gas markets simultaneously. The "diesel price multiplier effect" is 2.3 times relative to crude increases.

In Singapore, for example, gasoil prices surged 57%. These high prices are expected to persist as long as hostilities continue in the region.

Impact on the Trucking Industry

With diesel above $5 per gallon, truckers' operating costs have increased dramatically:

• A truck covering 100,000 miles per year at 6 MPG consumes approximately 16,667 gallons of diesel per year
• At $5.07/gallon, the annual fuel cost is $84,501
• Compared to $4.00/gallon (2025), that's an increase of $17,834 per year

For owner-operators and small fleets, this increase puts enormous pressure on profit margins, especially if they can't pass the cost on to customers.

Solution: Go Green APU — Real Fuel Savings

With diesel this expensive, reducing fuel consumption is no longer optional — it's a survival necessity.

The Go Green APU is an auxiliary power unit designed specifically to eliminate engine idling during driver rest stops.

How Does It Work?

The Go Green APU provides:

• Air conditioning and heating without leaving the main engine running
• Electric power for appliances, TV, microwave, tools
• Drastic reduction in fuel consumption — the APU uses only 0.2-0.3 gallons per hour, compared to 0.8-1.0 gallons/hour at idle

Real Savings — Practical Example

Suppose a trucker spends 10 hours per day idling (sleeping + waiting):

• Main engine idle: 10 hours × 0.9 gal/hour = 9 gallons per day
• With Go Green APU: 10 hours × 0.25 gal/hour = 2.5 gallons per day
• Daily savings: 6.5 gallons
• Monthly savings (25 days): 162.5 gallons
• Annual savings: 1,950 gallons

At $5.07/gallon, that's a savings of:

• $32.95 per day
• $823.88 per month
• $9,886.50 per year

In California at $6.43/gallon, annual savings jump to $12,538.50.

More Information

To learn more about the Go Green APU, visit gogreenapu.com or call 814-942-9407.

You can also visit us at The Truck Savers™ in Houston, TX — (713) 455-5566 — for truck maintenance, free road simulator inspection, computerized alignment, and more.

Sources: EIA, FreightWaves, Supply Chain Brain, GasBuddy