Diesel Rises Seventh Consecutive Week: $5.07/Gal National Average

Diesel price hit $5.07/gallon national average after 7 consecutive weeks of increases. California reaches $6.43/gal. Middle East conflict continues pushing prices upward.

Diesel won't stop climbing — and we're now at 7 consecutive weeks of increases 📈⛽

The national average diesel price hit $5.07 per gallon this week (March 21, 2026), according to data from GasBuddy and Professional Wheelers.

This represents the highest level since October 2023, and there are no signs it will drop anytime soon.

This Week's Numbers

National diesel outlook (week of March 14-21, 2026):

• National average: $5.07/gal (+14¢ vs. last week)
• California: $6.43/gal (most expensive in the country)
• Texas: $4.71/gal
• Illinois: $5.23/gal
• New York: $5.35/gal
• Florida: $4.95/gal

Why Does It Keep Rising?

The US-Iran conflict remains the dominant factor:

1. Strait of Hormuz Closed

Iran keeps the Strait of Hormuz blocked, through which 20% of world oil passes. This forced:

• Longer alternative routes (around Africa)
• Higher maritime transport costs
• Reduced global crude supply

2. Refineries Operating at Maximum

Refineries in the United States are working at 90%+ capacity trying to compensate for reduced crude imports from the Middle East.

But even at maximum production, they can't meet demand.

3. Limited Strategic Reserves

The federal government already released strategic reserves in February, but those reserves are finite. They can't keep releasing indefinitely.

California: The Most Affected

California always has the most expensive diesel in the country, but now the gap is brutal:

• $6.43/gal — $1.36 more expensive than national average
• Some stations in remote areas charge $7.00+/gal
• State tax and environmental regulations add ~$1.20/gal extra vs. other states

For truckers operating in California, this means:

• A 300-gallon tank costs $1,929 (vs. $1,521 in Texas)
• Difference of $408 per full tank

Impact on Freight Rates

Rising diesel is forcing adjustments in freight rates:

Rising Fuel Surcharges

Most brokers and shippers use fuel surcharge tables based on DOE/EIA national average diesel price.

With diesel at $5.07, typical fuel surcharges are at 45-55 cents per mile — but even that may not be enough if diesel keeps rising.

Owner-Operators Under Pressure

If you have fixed contracts (per-mile rate without fuel surcharge), you're losing money every week that passes.

It's time to renegotiate. With spot rates rising (especially flatbed), you have more bargaining power.

When Will It Drop?

Projections aren't optimistic. Analysts expect diesel to stay high until mid-2026, unless:

1. The US-Iran conflict resolves
2. The Strait of Hormuz reopens
3. Saudi Arabia significantly increases production to compensate

For now, plan for expensive diesel for the next few months.

How to Survive These Prices

1. Minimize Idling

An idling truck consumes 0.8 to 1.5 gallons per hour. If you sleep 8 hours with the engine running, you're burning 6-12 gallons = $30-$60 per night.

Solution: Go Green APU lets you keep AC, heat, and electricity without leaving the engine running.

Estimated savings: $600-900/month with diesel at these prices.

2. Plan Efficient Routes

• Avoid unnecessary detours
• Use optimized route apps (Waze, Google Maps with truck mode)
• Combine loads to reduce deadhead miles

3. Keep Your Truck Aligned

A misaligned truck can reduce fuel economy up to 10% and destroy tires in weeks.

At The Truck Savers™ we do precision alignment that:

• Maximizes tire life
• Improves fuel economy
• Reduces suspension wear

4. Buy Diesel Strategically

Prices vary up to $0.50-1.00/gal between neighboring states.

If you regularly cross state lines:

• Fill up in cheaper states (Texas, Oklahoma, Arkansas)
• Avoid filling in California, Illinois, New York if possible
• Use apps like GasBuddy or Trucker Path to find cheapest stations on your route

What's Coming

Next week (March 28) we'll see if diesel:

• Keeps rising (week #8 consecutive)
• Stabilizes at $5.07
• Drops (unlikely according to analysts)

Stay tuned to Middle East news — any escalation or de-escalation will move diesel prices immediately.

Call us: (713) 455-5566 (Houston) | FREE road simulator inspection + alignment for new customers

Source: GasBuddy, Professional Wheelers, DOE/EIA