A potential U.S. ban on diesel exports would temporarily lower domestic fuel prices while simultaneously driving up gasoline costs and straining European supplies, according to financial projections released by Goldman Sachs. The proposal, highlights the interconnected nature of global petroleum refining and the rapid ripple effects of trade restrictions on everyday consumers.
Market Mechanics of a U.S. Diesel Export Ban
President Donald Trump backed the idea of banning U.S. diesel exports on Tuesday, putting a spotlight on a nation that currently operates as the world’s largest exporter of the fuel. However, the proposal faces internal administration resistance. U.S. Energy Secretary Chris Wright countered on Wednesday that a ban would fail to achieve its intended relief and could instead drive up prices for gasoline and jet fuel.
Goldman Sachs estimated in a research note that each week of a diesel export ban would reduce average U.S. retail diesel prices by about 25 cents per gallon—roughly 4% from a current baseline of $6.50 a gallon—provided that storage capacity remains available. That initial downward pressure stems from a rapid buildup of domestic inventories. Net U.S. diesel exports have grown from 1.1 million barrels per day in 2025 to roughly 1.6 million barrels per day in recent months, creating a massive volume of fuel that would suddenly stay onshore.
Refining Bottlenecks and Surging Gasoline Prices
The temporary relief at the diesel pump carries a distinct expiration date tied to physical storage limits. Goldman Sachs calculated that U.S. diesel storage tanks could theoretically fill within 9 to 10 weeks if outflows dropped by 1.6 million barrels per day, though refinery output cuts and shifting demand could alter that timeline in practice.
Because diesel, gasoline, and jet fuel are largely produced together during the refining process, trapped diesel forces difficult operational choices. Once storage reaches capacity, each additional week of an export ban would exert about 30 cents per gallon of upward pressure on U.S. retail gasoline prices as refiners curtail operations to manage gluts. According to reporting from ANI, gasoline prices could begin climbing even before storage hits its absolute limit as refiners proactively scale back production.
Spillover Effects on European Wholesale Markets
Goldman Sachs estimates that each week of a U.S. export ban would raise European wholesale diesel prices by $3 per barrel, or just under 2%. That upward trajectory could be partially mitigated by European strategic petroleum reserve releases, which the bank notes might offset about half of the regional price increase.
Looking past the duration of any restriction, Goldman Sachs concluded that domestic and international diesel prices would eventually reconnect once a ban is lifted. That normalization, however, would leave global refined-product markets permanently tighter than they would have been otherwise, driven by the persistent inventory drawdowns caused by temporary U.S. refinery cuts.
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