European Diesel Up 70% as Middle East Refinery Losses Reach 9.6 Million b/d
With a fifth of global processing capacity offline, the product crunch may outlast the Hormuz conflict and drive sustained fuel price inflation.
European diesel prices rose 70% above pre-war levels in the week of 2026-08-17, Reuters' Ron Bousso reported, even as crude markets showed tentative signs of supply recovery from the Strait of Hormuz disruption.7
The fuel price surge tracks a specific supply problem: the IEA estimates that roughly a fifth of global refining capacity, some 9.6 million barrels per day, has been knocked out by hostilities in the Middle East. IEA data show global refinery runs in the second quarter of 2026 ran 5.1 million barrels per day below the same period in 2025.7
That refining shortfall is the mechanism transmitting geopolitical disruption into consumer-facing inflation. Crude can be rerouted. Refining capacity cannot. With Middle Eastern processing facilities offline or underutilized, finding replacement throughput is proving harder than sourcing replacement barrels.
The US has stepped into the gap on product supply, with American fuel exports hitting an all-time weekly average high of 1.9 million barrels per day in recent weeks, according to OilPrice.com.7 But US export capacity has physical limits, and NYMEX heating oil traded at $4.41 per gallon as of 2026-08-24, reflecting the product-market strain that European consumers are already experiencing.
The upstream picture is simultaneously more complex. Middle East oil flows briefly returned to pre-war levels in early July, with loadings reaching 20 million barrels per day through the Strait of Hormuz, before falling back to 12 million barrels per day later in the month, the IEA reported.5 That volatility — an 8 million barrel per day swing within a single month — illustrates how unstable any Hormuz recovery remains.
Saudi Arabia's crude production rose to 8.24 million barrels per day in July from 7.34 million barrels per day in June, and total OPEC+ output reached 34.53 million barrels per day from 33 million barrels per day over the same stretch, the IEA's August Oil Market Report showed.6 Yet despite that June-July recovery, global output remained approximately 9.4 million barrels per day below pre-war levels, the IEA said.4
Iran's position sits at the centre of the supply uncertainty. A Bloomberg survey showed OPEC's 11 current members produced 16.33 million barrels per day in May, down 1.22 million barrels per day on the month, with Iran alone accounting for more than half the decline.1 Iranian output fell 710,000 barrels per day to 2.34 million barrels per day, a five-year low, as the US blockade tightened. Kuwait's production fell 310,000 barrels per day to just 490,000 barrels per day, less than a fifth of its pre-war rate.1
The US threatened what officials described as "the toughest sanctions in history" against Iran, OilPrice.com reported on Sunday (2026-08-23), which would close whatever gap remains between current Iranian output and a full embargo.7 Sanctions enforcement, not the military conflict, may prove the longer-lasting supply suppressor.
Demand has pulled back, but not enough to offset the supply shock. The IEA projected a 2.45 million barrel per day year-on-year decline in global oil demand for the second quarter of 2026, with full-year demand expected to fall 420,000 barrels per day, approximately 1.3 million barrels per day below pre-conflict forecasts.2 LPG, ethane, and naphtha account for roughly half that downgrade, averaging a 700,000 barrel per day reduction, while jet fuel and kerosene demand fell 210,000 barrels per day from pre-conflict expectations.2
Still, the demand destruction has not cleared the product shortage. The IEA's August Oil Market Report placed the global oil deficit at 1.8 million barrels per day this quarter.5 ICE Brent crude front-month traded at $93.25 per barrel as of 2026-08-24, while NYMEX WTI crude front-month stood at $85.15 per barrel.
One bearish counterweight: US crude inventories rose 17.4 million barrels in the most recent weekly data, the largest single-week build since January 2023, Reuters reported, while Cushing stocks stood at 21.6 million barrels, close to operational stress levels on the low end.6,3 The build likely reflects rerouted flows or demand weakness rather than a genuine easing of the underlying crunch.
The refinery capacity question differentiates the current market from prior supply disruptions. Even if the Strait of Hormuz stabilized, reconstructing or restoring 9.6 million barrels per day of processing capacity is not a weeks-long exercise. The IEA's Q2 run data suggest the product shortfall has already been embedded in the system for months, and any tightening of US sanctions on Iran before that capacity returns would extend Europe's diesel crunch well into the winter heating season.7