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US diesel prices hit record high as conflicts squeeze global supply

US diesel prices hit record high as conflicts squeeze global supply

Built World

National average tops $6 for the first time as Iran war and Russian export ban cut world diesel supply

2 days ago: GasBuddy logs national diesel average above $6 for the first time

Overview

Updated 13 hours ago

US diesel hit a record $6.05 a gallon Friday, September 11, according to AAA. That's more than 60 percent above the $3.76 average on February 28, when the US and Israel attacked Iran.

Brent crude settled at $107.63 a barrel on September 10, the highest since mid-May. The Strait of Hormuz has been effectively closed since late February, and Moscow banned diesel exports in July. China also restricted fuel exports, and the combined cuts removed about 8 percent of world diesel supply, said Andy Lipow of Lipow Oil Associates.

Why it matters

Every dollar per gallon of diesel shows up as higher food and shipping costs for households.

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Key Indicators

$6.05
US national average diesel price per gallon
Record high reported by AAA on September 11, 2026, up from $5.85 on September 4. GasBuddy's tracker crossed $6 a day earlier.
60%
Price increase since war began
Diesel averaged $3.76 the day the US and Israel attacked Iran on February 28. The September 11 average of $6.05 is more than 60 percent higher.
$107.63
Brent crude price per barrel
Brent settled at $107.63 on September 10, the highest since mid-May. It traded near $72 before the war began.
20%
Global seaborne diesel trade disrupted
ING analysts estimate combined disruptions from the Iran war and Russian refinery attacks cut about 20% of seaborne diesel trade.
19.3M barrels
East Coast distillate inventories
Record low for late August, the lowest since EIA records began in 1982.
8%
Global diesel supply disrupted
Roughly 2 million barrels per day affected by the Russian export ban, Strait of Hormuz delays, and Chinese export restrictions.
98%
US refinery utilization rate
Refineries are running near maximum capacity, leaving little spare supply if a hurricane or breakdown takes plants offline.
$112.17
US diesel crack spread per barrel
Hit a record $112.17 on September 10, per LSEG. The American Action Forum separately put the Gulf Coast crack spread above $100 on September 1, about five times the pre-conflict baseline of $20.
$34.8B
Added diesel costs for commercial transport
Direct fuel costs from late February through August 2026, per the American Action Forum. Every $1 per gallon adds about $120 million per day.
13%
US diesel inventories below five-year average
Total US diesel inventories stood at 106.3 million barrels, 13 percent below the five-year average, per the EIA.

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People Involved

Organizations Involved

Timeline

February 2026 September 2026

11 events Latest: 2 days ago Showing 8 of 11
Tap a bar to jump to that date
  1. GasBuddy logs national diesel average above $6 for the first time

    Latest Market

    GasBuddy's tracker put the national average above $6 a gallon Thursday, a day before AAA's reading hit $6.05. The US-Israel war on Iran and Ukrainian attacks on Russian refineries have squeezed supply.

  2. Brent settles at $107.63; diesel crack spread hits record $112.17

    Market

    Brent crude settled at $107.63 a barrel, the highest since mid-May, as US-Iran fighting intensified. The US diesel crack spread, a measure of refining margins, hit a record $112.17 a barrel, per LSEG.

  3. Brent crude surges past $100 a barrel

    Market

    The international benchmark topped $100, the highest since July, after a new round of US-Iran strikes. It traded near $72 before the war began.

  4. Diesel hits new record $5.90 on Labor Day

    Market

    AAA reports the national average at $5.90 a gallon on September 7, up from $5.85 on September 4. Gasoline also set a Labor Day record at $4.15 a gallon.

  5. Diesel hits record $5.85 national average

    Market

    AAA reports the national average at $5.85, an all-time high, up about 55 percent since the war began.

  6. GasBuddy logs $5.82, topping 2022 record

    Market

    Fuel tracking service GasBuddy records $5.820 a gallon, beating its June 2022 peak of $5.819.

  7. EIA reports East Coast diesel inventories at record low

    Data

    Distillate stocks fall to 19.3 million barrels for the week ending August 28, the lowest August level since EIA records began in 1982.

  8. EPA allows winter-blend gasoline early

    Policy

    The Environmental Protection Agency said winter-blend gas could be sold starting September 1, ending summer-blend requirements early to boost supply.

  9. Diesel holds above $5 a gallon

    Market

    National average stays above $5 as the Iran war drags on and supply disruptions mount.

  10. Russia bans diesel exports after refinery strikes

    Policy

    Moscow halted diesel sales abroad in July after Ukrainian drone strikes knocked out refineries, removing about 800,000 barrels per day from world supply. The ban runs through September 30.

  11. US and Israel launch war against Iran

    Conflict

    Military action begins. Diesel averages $3.76 a gallon that day, and crude prices climb fast.

Scenarios

1

Diesel tops $6 as heating season tightens supply

Possible Resolves by Nov 30, 2026

Discussed by: GasBuddy analysts, TradeStation market strategists

Autumn harvest demand arrives with inventories at record lows. Heating oil, a similar distillate drawn from the same stockpiles, adds pressure as winter approaches. If the Iran war and Russian export ban persist, the national average could push past $6 a gallon.

2

Iran ceasefire restores Hormuz flows, diesel falls below $5

Unlikely Resolves by End of 2026

Discussed by: Commodity analysts at UBS, energy trading desks

A diplomatic settlement or de-escalation restores tanker traffic through the Strait of Hormuz. If Russia also lifts its diesel export ban, prices could fall back below $5 a gallon. This would require both conflicts to ease, which no major analyst currently expects.

3

Diesel stays above $5 into 2027, squeezing households and farmers

Likely Resolves by Mar 1, 2027

Discussed by: TradeStation strategists, UBS analysts, Reuters reporting

The status quo holds: no ceasefire, no end to the Russian export ban. Diesel remains above $5 through winter and spring, pushing food and shipping costs higher and slowing consumer spending. Some businesses have already added fuel surcharges on online orders.

4

Hurricane knocks Gulf refineries offline, diesel spikes above $6.50

Possible Resolves by Nov 30, 2026

Discussed by: Energy analysts citing refinery capacity strain

US refineries are running at 98 percent capacity, mostly in Texas where heat has already stressed operations. A major hurricane hitting the Gulf Coast could knock several plants offline for weeks, cutting supply when inventories are already at record lows.

5

Russia extends diesel export ban past September 30

Possible Resolves by Q3 2026

Discussed by: Energy analysts at American Action Forum, CNBC

Moscow's ban on diesel exports runs through September 30. If Russia extends it, roughly 800,000 barrels per day stay off the market through winter. Heating oil draws from the same distillate stockpiles as diesel, so prices would likely stay above $6 into 2027.

6

Refinery maintenance stalls inventory rebuild, diesel holds above $6 into winter

Likely Resolves by Nov 30, 2026

Discussed by: Rapidan Energy Group analysts

US refineries enter seasonal maintenance in September and October, which cuts output just as harvest and heating demand build. Rapidan's Linda Giesecke expects stockpiles to stay hard to rebuild, with diesel margins elevated and volatile into early next year.

Historical Context

3 moments from history that rhyme with this story — and how they unfolded.

October 1973 – March 1974

1973 OPEC oil embargo

Arab members of OPEC cut oil exports to the US and allies in response to US support for Israel in the Yom Kippur War. Oil prices roughly quadrupled, US gas stations ran short, and long lines formed at pumps.

Then

The embargo ended in March 1974 after diplomatic efforts. Prices stayed high for years.

Now

Triggered lasting policy shifts: fuel economy standards, the Strategic Petroleum Reserve, and the 55 mph speed limit.

Why this matters now

The clearest historical example of Middle East conflict driving US fuel prices and broader inflation.

2008

2008 oil price spike

Crude futures climbed to $147 a barrel in July 2008 as global demand outpaced supply. US gasoline topped $4 a gallon nationally for the first time. Consumers cut back on driving and discretionary spending.

Then

Prices collapsed as the financial crisis triggered a deep recession later that year.

Now

Demonstrated how sustained high fuel costs act as a drag on consumer spending and can help tip the economy into downturn.

Why this matters now

Shows the path from sustained high diesel prices to a broader economic slowdown, a risk analysts now flag.

February-June 2022

Russia's invasion of Ukraine and the June 2022 diesel record

Russia invaded Ukraine in February 2022, disrupting energy markets. Crude spiked and diesel hit $5.81 a gallon in June 2022, the record at the time. Refiners struggled to replace Russian diesel exports while Europe scrambled for alternative supplies.

Then

Prices eased by late 2022 as recession fears cut demand and Russia kept exporting at a discount.

Now

Set the benchmark that this event just broke, and showed how quickly war-driven supply shocks move fuel prices.

Why this matters now

The current record breaks the 2022 peak under similar conditions: war cutting crude supply and refining capacity.

Sources

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