US Diesel Export Ban Threat: 10 Countries Most Exposed to a Supply Cutoff

The United States, the world's largest diesel exporter, is weighing restrictions on overseas shipments of the fuel as domestic prices sit at record highs. In less than a week, the idea moved from a handful of lawmakers to the center of the energy debate in Washington, and importers from Mexico to the United Kingdom are now measuring how exposed they would be if American barrels stopped leaving the Gulf Coast.

Pressure built on Tuesday, September 22, 2026, when President Donald Trump said he backed keeping diesel at home, after Republican senators Chuck Grassley of Iowa and Dan Sullivan of Alaska called for a temporary embargo. In the House, Representative Tim Burchett of Tennessee introduced two bills, one that would halt exports through January 2027 and another that would trigger restrictions whenever the national average price reaches $5 a gallon. On September 23, Politico reported that the White House was preparing a 90-day ban, a report the administration denied the same day.

The approach appeared to shift on September 24. Energy Secretary Chris Wright contacted executives at several major refiners to gauge support for a voluntary cut in exports, while warning that an outright ban could force refiners to lower output and raise gasoline and jet fuel prices. The American Petroleum Institute and the American Fuel & Petrochemical Manufacturers urged the president to reject any mandatory or voluntary restriction, and more than 30 business and energy groups sent a similar message. As of September 26, no formal decision has been announced, and the White House says the president is still evaluating all options.

The backdrop is an unusually tight global market. The conflict involving Iran has disrupted Middle Eastern refining and shipping, while repeated drone strikes on Russian refineries have reduced Russian fuel output. US distillate inventories fell to 107.9 million barrels as of September 11, the lowest level in more than four decades according to the US Energy Information Administration (EIA). The average US diesel price reached $6.50 per gallon on September 25, up from $5.61 a month earlier, according to AAA.

Since March, the United States has shipped around 1.4 million barrels per day (b/d) of distillate abroad, roughly 5% of global demand. The EIA publishes monthly export data by destination, and the ranking below uses its figures for January to June 2026, the latest available, combined with each country's ability to find replacement supply quickly.

1. Mexico

Mexico is by far the most exposed market. US distillate shipments to the country averaged about 220,000 b/d in the first half of 2026 and climbed to 288,000 b/d in June, a volume analysts say covers more than 40% of national supply. The Atlantic Council estimates that Mexico's diesel stocks fell from about eleven days of supply at the end of 2024 to fewer than six days in April 2026, meaning shortages could appear within days of a cutoff. Around 120,000 b/d crosses the border through overland pipelines, largely via the Laredo district. Many older refineries run by state oil company Pemex produce higher-sulfur diesel, a fuel that releases more air pollution and does not meet the clean-air standards required in major cities, so the country depends on US ultra-low sulfur diesel. On September 21, President Claudia Sheinbaum said supply was secured through the end of 2026, pointing to the new Olmeca refinery at Dos Bocas and the Pemex-owned Deer Park refinery in Texas. Some analysts believe Washington could exempt countries that supply crude oil to the United States, a group that includes Mexico.

2. Netherlands

On paper, the Netherlands is the second-largest buyer of US diesel, with about 203,000 b/d on average between January and June and a peak of 267,000 b/d in April. These figures, however, overstate the country's own exposure. Most of the cargoes arrive in the Rotterdam and Amsterdam area, the main fuel trading and storage hub for northwest Europe, where they are blended, stored and shipped on by barge, pipeline and tanker to Germany, Belgium, France and other markets. A US cutoff would therefore hit Dutch consumers far less than the volumes suggest, and the real pressure would spread across the wider European market. That market is already fragile, since the European Union banned Russian diesel in 2023 and shipments from Saudi Arabia and the United Arab Emirates declined in 2026, leaving Europe more reliant on US supply. The European Commission said it was concerned about the plan, and French President Emmanuel Macron called the proposed ban catastrophic.

3. Chile

Chile imported about 119,000 b/d of US distillate in the first half of the year, reaching 148,000 b/d in May. Diesel powers the giant haul trucks and generators used in the country's copper mines, and Chile is the world's largest copper producer. A supply squeeze would raise mining costs and could ripple through copper-dependent industries such as electrical equipment and data center construction.

4. United Kingdom

UK imports from the United States averaged about 95,000 b/d, with 151,000 b/d shipped in January alone. Fuel Industry UK says the country now imports about 55% of its road diesel, a dependence that deepened after the closures of the Grangemouth and Lindsey refineries pushed domestic refining output to a record low in 2025. Almost a third of British diesel imports come from the United States. Prime Minister Andy Burnham is under growing pressure from opposition parties to seek a UK exemption from any restriction.

5. Ecuador

Ecuador received about 86,000 b/d on average, with a high of 128,000 b/d in April. Although the country produces crude oil, its domestic refining capacity falls short of demand, and analysts at the Atlantic Council flagged its limited storage as a key weakness. Fuel is critical for its banana, shrimp and flower exports, which rely on trucks and refrigerated transport.

6. Peru

Peru averaged about 84,000 b/d of US distillate between January and June, topping 100,000 b/d in March. Like Ecuador, it has thin inventories and relies heavily on US supply. Mining, fishing and long-distance trucking would be the first sectors to feel higher prices or delayed cargoes.

7. Brazil

Brazil's average of about 61,000 b/d hides a sharp recent jump. Shipments rose from almost nothing in March to 146,000 b/d in June, making Brazil one of the top three destinations that month. The country refines 70% to 80% of the diesel it uses, but lower global supply has increased its reliance on US cargoes. The timing is sensitive because farmers are entering the soybean planting season, when diesel demand for tractors and trucks is high.

8. Panama

Panama took about 42,000 b/d on average, with a spike to 98,000 b/d in April. The country has no operating refinery and serves as a major fueling point for vessels transiting the Panama Canal, so any shortage would affect both domestic transport and international shipping.

9. Guatemala

Guatemala imported about 41,000 b/d, the largest volume in Central America. The region has little or no refining capacity, and neighbors such as Honduras and Costa Rica each received more than 25,000 b/d on average, which means a ban would hit the entire isthmus at once.

10. Argentina

Argentina averaged about 30,000 b/d, but volumes climbed steadily from 26,000 b/d in April to 78,000 b/d in June. Despite rising crude production, its refineries cannot fully cover winter heating and harvest demand, and a US cutoff would force buyers to seek more expensive cargoes elsewhere.

Analysts broadly warn that a ban could backfire. Wood Mackenzie says China is the only producer with enough spare refining capacity to replace much of the lost US volume, and it may choose not to. S&P Global estimates that a full ban could fill US storage tanks and force refinery cuts of as much as 750,000 b/d, potentially turning the United States into a net gasoline importer in the fourth quarter. Energy economist Philip Verleger warned world diesel prices could rise by as much as 100%. For now, many observers expect Washington to favor voluntary export quotas or targeted exemptions rather than a blanket ban, but importers are already looking at India, China and Middle Eastern refiners as fallback suppliers.