• Goldman Sachs (GS) warns a sudden U.S. diesel export ban could slash Latin American GDP by around 1%, with Mexico and Brazil most exposed.
  • U.S. diesel prices might initially drop 25 cents per gallon weekly, but the relief could reverse as storage fills and gasoline prices climb.
  • The proposal, backed by President Trump, remains a serious policy risk despite no formal announcement.

Fragile Prospects for Latin America

A potential U.S. ban on diesel exports, currently under consideration by the Trump administration, would hit Latin America harder than any other region, according to a new analysis from Goldman Sachs. The investment bank estimates that a sudden, complete cutoff of U.S. diesel shipments could reduce Latin American GDP growth by approximately 1 percentage point, though inventories and alternative suppliers would soften the blow. Mexico, Chile, Ecuador, and Peru are particularly vulnerable, with U.S. imports accounting for as much as 50% of diesel consumption in some cases. Brazil, which relies on imports for roughly 30% of its diesel demand, received about 80% of its September imported diesel from the United States, according to reports.

President Donald Trump publicly backed the idea of restricting U.S. diesel exports in late September. The administration has reportedly examined a 90-day ban, but Energy Secretary Chris Wright has argued that a blanket ban would fail and instead described voluntary, refinery-led adjustments to export flows as more likely. No final restriction has been formally announced.

U.S. Relief Could Be Fleeting

Goldman’s core refinery argument is that diesel, gasoline, and jet fuel are co-produced. A ban can temporarily strand diesel in the U.S., lowering domestic diesel prices while spare storage exists. Goldman estimates each week of a ban could initially lower average U.S. retail diesel prices by roughly 25 cents per gallon, just under 4% from the referenced $6.50-per-gallon level. That relief is inherently temporary. If tanks fill, refiners may reduce throughput rather than continue producing fuel they cannot sell. In Goldman’s estimate, each additional week after storage fills could put about 30 cents per gallon of upward pressure on U.S. gasoline prices. This is why both Goldman and Energy Secretary Wright warn that a diesel-only restriction could backfire for consumers who buy gasoline or depend on jet-fuel-intensive travel and logistics.

Europe, a structural diesel importer, would also be affected. Goldman estimates a ban could lift European wholesale diesel prices by about $3 per barrel per week, although releases from strategic petroleum reserves could offset roughly half of that increase.

Inflation and Economic Ripple Effects

Goldman’s rule of thumb—an enduring 10% increase in diesel prices adding roughly 0.1 percentage point to headline inflation—captures direct and indirect effects. Diesel appears in transport and production costs, which gradually flow into retail goods and services. The pass-through would differ by country depending on fuel subsidies, exchange rates, freight intensity, taxes, and the ability of businesses to absorb costs.

The policy debate is occurring during a period of unusually high U.S. diesel prices—about $6.50 per gallon in Goldman’s reference case—and tight global middle-distillate markets. The U.S. is the world’s largest diesel exporter, making any interruption globally consequential. Goldman’s initial analysis focused on the U.S.–Europe price effect, but its October 2 follow-up emphasizes that Latin America has the greatest exposure.

Political and International Context

The immediate political incentive is domestic fuel affordability ahead of U.S. midterm elections. Republican candidates and some lawmakers have pressed for export limits as a way to respond to record diesel prices, while the administration evaluates whether a complete or partial restriction is feasible.

However, the issue illustrates a tension between domestic price management and the United States’ role as a reliable energy supplier. A full ban would be a major shift in U.S. energy-trade policy and, according to reporting, the first restriction on U.S. energy exports since the decades-old crude-oil export ban was lifted in 2015. Mexico and other Latin American partners could see an abrupt restriction as a supply-security and bilateral-trade problem, not merely a market event. Europe’s dependence on U.S. diesel has risen after the loss of Russian supplies, so an export curb could compound energy-security challenges among U.S. allies.

The legal path is uncertain. Experts have said the president may have broad emergency powers to restrict exports, but whether those authorities support a complete unilateral ban is not clear. The administration’s internal public divide matters. Trump has kept restrictions under consideration, while Wright has repeatedly said a categorical ban is counterproductive and has advocated voluntary measures that preserve refinery operations.

Outlook

The most likely near-term outcome appears to be voluntary redirection or moderation of exports, rather than an immediate, comprehensive ban. That is consistent with Wright’s stated preference, the practical storage constraint, and opposition from refiners. It would still be market-moving if it diverted material Gulf Coast volumes away from Latin America and Europe.

If a formal restriction is announced, markets would focus on five details: whether it is a full ban, quota, licensing regime, or informal voluntary arrangement; its duration and whether cargoes already contracted or in transit are exempt; whether Mexico, other treaty partners, military-related shipments, or humanitarian supplies receive exemptions; how rapidly refiners’ storage fills and whether refinery runs decline; and whether importing countries release stocks, reduce fuel taxes, subsidize prices, or secure substitute cargoes.

A prolonged restriction could accelerate supply diversification in Latin America and Europe. Importers would likely seek more cargoes from the Middle East, India, and Asia; rebuild commercial inventories; expand storage; and reassess refinery investments. Those adjustments can improve resilience, but they are costly and cannot fully eliminate the pricing effect of losing a nearby, large U.S. supplier. The central expert conclusion is therefore counterintuitive: an export ban could yield a brief domestic diesel-price benefit, but the longer it persists, the greater the risks of higher U.S. gasoline prices, higher overseas diesel prices, lower Latin American growth, and broader inflation. Goldman’s analysis explicitly treats the policy as plausible, but not as an economically clean or durable solution.

Correction: An earlier version of this article misstated the estimated weekly decline in U.S. diesel prices under a ban. It is 25 cents per gallon, not 35 cents.