A U.S. Diesel Ban Would Export the Global Shortage

The U.S. retail diesel average reached a record $6.53 a gallon on Tuesday, according to AAA. President Donald Trump said the same day he wants to stop sending the fuel overseas.

European diesel’s premium over Brent jumped to more than $95 a barrel on Wednesday, a record in market data going back to 2011, as traders priced a U.S. diesel export ban into a market already short of Gulf and Russian barrels.

Trump Backs a Ban Europe Is Already Pricing

Trump spoke at the United Nations in New York, before a meeting with Ukrainian President Volodymyr Zelensky. “I’ve said let’s not send out the diesel. We make a lot of diesel,” he told reporters, adding that he had already made the case inside his own team.

Treasury Secretary Scott Bessent, standing with him, said officials are examining “whether it’s feasible in terms of the overall refining capacity and whether a full or partial ban would work.” Trump said a decision would come “fast, one way or the other.”

The White House rapid-response account posted the same instruction on Tuesday, with Trump saying he had directed his team to weigh a ban or a restriction.

.@POTUS says he has directed his team to weigh a ban or restriction on diesel exports — with a decision coming "fast, one way or the other." pic.twitter.com/fv4Z5xg6jQ

— Rapid Response 47 (@RapidResponse47) September 22, 2026

No order has been signed. The threat was enough. U.S. diesel futures have dropped almost 47 cents a gallon from their September 15 settlement record of $5.262, even as the pump price made a new high. That is the split a ban is built to create: extra barrels trapped on the Gulf Coast, and a tighter market everywhere those barrels used to go.

WHAT WE KNOW

• The pump: AAA put the U.S. average at $6.53 a gallon on Tuesday, with California at $8.44.
• The surcharge print: The Energy Information Administration on-highway average, used in trucking fuel surcharges, rose 24.4 cents to $6.529, up $1.951 from $4.578 on July 6.
• The politics: Trump backed a halt. Bessent said the choice is a full ban, a partial ban, or no ban, judged against refining capacity.

WHAT IS UNCONFIRMED

• The order: Nothing has been signed, and the length of any halt has not been set.
• The cut: Officials have not said how many export barrels would be blocked, or from which ports.

Iowa Sen. Chuck Grassley had already urged an embargo, saying high diesel was killing farm income. Louisiana Gov. Jeff Landry has backed a 90-day halt. The crude-export ban that ran from 1975 to 2015 never applied to diesel, so this would be new terrain for a fuel the United States now sells in size.

America Is Still Sending Distillate Overseas

The United States did not become a diesel island when the Iran war began in late February. It became the release valve. EIA weekly figures show distillate fuel oil exports hitting 1.935 million barrels a day in the week ending August 7, then easing to 1.614 million barrels a day of distillate in the week ending September 11.

EIA WEEKLY DISTILLATE EXPORTS

Those weekly prints sit above last year’s pace. ULSD exports averaged 1.267 million barrels a day last year and have run at 1.566 million barrels a day since the Iran war began. Keep that stream at home, the ban’s backers say, and U.S. tanks fill and prices sag.

The same numbers are why a halt would be felt abroad the next week. Latin America has long taken the largest share of U.S. distillate. Europe has taken a much bigger slice since 2022, and a still bigger one this year, because Gulf and Indian barrels that used to cover Northwest Europe have thinned toward zero.

A Gulf Coast Glut Would Lift Coastal Prices

Garrett Golding, who covers energy at the Federal Reserve Bank of Dallas, laid out the mechanics on September 21, a day before Trump spoke. Extra supply would show up first where the export refineries sit, which is the Gulf Coast, not Maine and not California.

With US export volumes exiting the global market, the global diesel/distillate balance tightens. This immediately causes those prices to rise, and will boomerang back on portions of the country that rely on imports, namely the East Coast and to a lesser extent the West Coast

Garrett Golding, energy analyst, Federal Reserve Bank of Dallas, on X

He then walked the second hit. Refineries that cannot sell diesel overseas fill local storage and cut crude runs. A barrel of crude is not a barrel of diesel. Cut the run and you also cut gasoline, jet fuel and the rest of the slate, which means boomerang back on the import-reliant coasts and higher prices for products the ban never named.

WHERE A BAN SHOWS UP FIRST

• Gulf Coast tanks: Export plants would keep barrels that now leave Houston and the Mississippi, so wholesale prices there could sag first.
• East Coast racks: The region still leans on waterborne product. Tighter global diesel would raise the import barrel those terminals buy.
• West Coast racks: Golding said the West Coast gets less relief than the Gulf and some of the same rebound through the world price.
• The rest of the barrel: Lower diesel exports, in his telling, become lower crude runs and then dearer gasoline and jet fuel.

Golding tied the argument to earlier Dallas Fed work on a crude export ban. The short version is the same: trap a product, and you do not create a new refinery. You change who gets the barrel, then you change how hard the plants run.

Why Europe Now Runs on American Diesel

Europe’s usual diesel suppliers on the far side of Suez have not been late. They have been nearly absent. Vortexa’s Mick Strautmann found Middle East Gulf diesel and gasoil headed to Europe down to about 5,000 barrels a day in early May, from 110,000 a year earlier, while India West Coast volumes fell to zero from 190,000, a combined 295,000-barrel loss.

U.S. plants filled the gap. PADD 1 and PADD 3 diesel and gasoil exports to Europe more than doubled to 625,000 barrels a day in early May from 225,000 a year earlier, with US barrels more than covering Europe’s lost Gulf supply. Europe’s share of those U.S. exports climbed to 35% from 20%, the highest in Vortexa’s set. Total PADD 1 and PADD 3 seaborne diesel and gasoil exports reached 1.8 million barrels a day in that May window, 44% above 2025’s strongest month.

Latin America did not disappear. U.S. volumes into that market rose by 250,000 barrels a day year on year in May, to about 1 million barrels a day, even as Latin America’s share of the U.S. export pool fell to 53% from 61%. Brazil’s harvest still pulls diesel. So does a Russian export curb that has left fewer alternative cargoes in the Atlantic.

ARA gasoil stocks were already 18% below year-ago levels in that May rebuild, and they were still drawing. Strautmann’s warning then was that any hit to U.S. output would show up in Europe quickly. A policy hit to U.S. exports is the same exposure with a press conference attached.

The 1.6 Million-Barrel Hole Left by the Wars

The International Energy Agency’s September Oil Market Report is blunt about where the missing diesel went. Gulf diesel exports at a quarter of pre-war levels is the cleanest line in the file: net diesel and gasoil from Gulf countries averaged 390,000 barrels a day in August, just over a quarter of the rate before the Iran war, because the Strait of Hormuz has stayed badly constrained.

THE IEA SEPTEMBER DIESEL LEDGER

• Gulf net diesel and gasoil: 390,000 barrels a day in August, just over a quarter of the pre-war pace.
• Gulf plus Russia vs February: 1.6 million barrels a day lower, after those two regions had made up almost 45% of seaborne diesel and gasoil trade.
• Share of world oil demand: Diesel and gasoil are nearly 30% of global consumption, so the spike is not a niche trucking story.
• Wholesale U.S. diesel: Prices moved above $200 a barrel in early September, 94% above pre-war levels, with Europe and Asia close behind.

Refined products have been hit harder than crude. Total Gulf oil exports in August were about 13 million barrels a day, nearly half the pre-war level. Crude losses have narrowed to just below 45%, helped by bypass routes and U.S. naval escorts. Product and LPG exports remain nearly 60% lower, or 3.7 million barrels a day below February.

Russia is the other hole. In the first eight months of 2026, Ukrainian drones hit a Russian refinery every three days on average. The IEA said June refinery output there was the lowest in more than 20 years, and Moscow restricted diesel exports to protect home supply. Trump told reporters the strikes are “a serious hit on the Russians” and “a serious hit on the price of diesel,” and that he would take the point up with Zelensky.

HOW THE DIESEL MARKET TIGHTENED

1. Late February 2026: The Iran war begins and Gulf product flows through Hormuz seize up.
2. March through August 2026: Ukrainian drones hit a Russian refinery every three days on average, and Moscow later curbs diesel exports.
3. June 2026: Russian refinery output falls to a more-than-20-year low, per the IEA.
4. August 2026: Gulf net diesel and gasoil average 390,000 barrels a day; combined Gulf and Russian seaborne supply sits 1.6 million barrels a day below February; U.S. distillate exports peak at 1.935 million barrels a day.
5. September 15-16, 2026: The Federal Reserve raises rates. U.S. diesel futures settle at a record $5.262 a gallon on the 15th.
6. September 22, 2026: Saudi Arabia restarts the East-West pipeline after a Houthi strike on a third pump station near Riyadh airport, though Aramco had already warned European refiners not to count on October crude. Trump backs a U.S. diesel export ban. AAA prints $6.53.
7. September 23, 2026: Europe’s diesel premium over Brent jumps above $95 a barrel.

World oil supply is now projected at 100.7 million barrels a day in 2026, down 5.7 million from a year earlier and 1.3 million below the IEA’s August report, with a full Gulf recovery pushed into 2027. Observed inventories fell another 95 million barrels in August, taking the draw since February to 507 million barrels, or 2.8 million barrels a day. U.S., Chinese and other Asian plants have raised runs and still have not filled the gap.

The Fed Raised Rates Into a Fuel Shock

The Federal Reserve last week raised its target range by a quarter point to 3.75-4%, the first increase since 2023, in a 12-0 vote. The September projections put 2026 growth at 2.3%, inflation at 3.7% and unemployment at 4.1%. Sixteen of the 18 officials who submitted dots see at least one more hike this year.

We cannot affect any individual price, whether it be oil prices, whether it be foodstuffs at the grocery store. But what we can do, and will do, is ensure that any change in relative prices don’t broaden out.

Kevin Warsh, Federal Reserve chair, after the September rate decision

Ed Crooks, vice chair for the Americas at Wood Mackenzie, put a dollar figure on the diesel slice of that inflation. The United States uses about 45 billion gallons of diesel for transport each year. If prices stay near this level for a year, he wrote, that is an extra cost of about $125 billion, or about 0.4% of U.S. GDP, with farms and fishing taking a direct hit. Regular gasoline is about $4.48 a gallon, up about 40% from a year earlier, per AAA figures he cited. A shutdown at ExxonMobil’s Joliet refinery in Illinois has added a local squeeze on top of the global one.

Claudio Galimberti, chief economist at Rystad Energy, called the rate moves “a rational response to an energy crisis” that monetary policy cannot fix. “Brent at $100 and diesel at $6.50 a gallon are already squeezing consumers. The key question now is whether this energy shock remains primarily inflationary or starts tipping into something that resembles a slowdown,” he wrote, using Rystad’s $6.50 print from earlier in the week, before AAA’s $6.53.

Brent itself has come off the boil, from above $108 a barrel to $99.25 on Tuesday, still more than 35% higher than before the Iran war. Diesel has not followed crude down in a straight line, because the missing barrels are products, not just oil in the ground. The IEA cut both supply and demand outlooks for the rest of 2026, and now sees world oil demand falling 2.5 million barrels a day this year as high fuel prices, especially diesel, chew through use.

Harvest Time on a $6.53 Gallon

Diesel is the fuel that moves food, ore, containers and the last mile of almost every store delivery. A ban aimed at the harvest-state pump has to live with that list, not a gasoline-voter map.

THE WORK THAT RUNS ON DIESEL

• Trucks: The EIA on-highway print is the surcharge line in freight contracts, and it has risen $1.951 a gallon since July 6.
• Farms: Grassley’s warning is about fall field work and grain haul, not about commuting.
• Ships: Gasoil still bunkers a share of coastal and short-sea freight, and Europe’s import rebuild is a tanker story.
• Mines and plants: Haul trucks, generators and many industrial burners still take diesel when gas is scarce or the site is off the pipe.

Farm-state Republicans want those Gulf Coast barrels kept in the Midwest. Golding’s map says the extra supply would pool where the export docks are, while the world price, and therefore East Coast import racks, would move the other way. Europe is already trading as if the American cargoes are in doubt. Latin American harvest demand has not gone away.

Bessent still has to decide whether a full halt, a partial cap, or no cap at all fits the plants that make this fuel. Until that paper lands, the record $6.53 gallon and the $95 European crack are doing the arguing for him.