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Europe’s diesel inventories are on track to fall to their lowest seasonal level in at least a decade as multiple supply disruptions tighten the region’s fuel market, investment bank Morgan Stanley has warned.
In a research note dated July 19, Morgan Stanley analysts led by Martijn Rats said Europe’s diesel market is facing an unusually tight supply-demand balance, with stockpiles expected to decline steadily over the coming months.
“The picture is genuinely tight,” the analysts said. “Our supply/demand modeling points toward European diesel inventories falling to multi-year lows toward year-end.”
The warning comes as global energy markets continue to grapple with renewed geopolitical tensions following the escalation of the US-Iran conflict. While crude oil prices have surged amid concerns over supply disruptions in West Asia, diesel prices have outpaced gains in crude, reflecting growing stress in refined fuel markets.
Inventories seen falling to decade-low seasonal level
Morgan Stanley expects European diesel inventories to begin drawing down from August before reaching around 299 million barrels in November.
If realised, that would mark the lowest inventory level for that time of year since at least 2015, highlighting the severity of the expected supply squeeze.
Low diesel inventories typically leave markets more vulnerable to supply shocks and price spikes, particularly during periods of strong industrial and transport demand.
Refining capacity emerges as biggest challenge
The bank said the biggest constraint in the oil market is no longer crude supply but the ability to refine crude into diesel and other fuels.
“The real bottleneck in the oil system right now is refining, more so than crude,” the analysts said.
They pointed to unsold African crude cargoes and bearish contango pricing in parts of the crude market as signs that crude supplies remain relatively available. Instead, refining constraints have become the dominant factor driving fuel prices higher.
“The epicenter of all this is the diesel market, and Europe in particular,” the analysts added.
The tightening has pushed diesel refining margins in Northwest Europe — known as crack spreads — to record highs as refiners struggle to keep pace with demand.
Multiple supply disruptions hit market
Several supply-side factors are contributing to Europe’s diesel shortage.
Disruptions to shipping through the Strait of Hormuz have complicated fuel movements from the Gulf, while Ukrainian attacks on Russian refineries have reduced refining output. Adding to the strain, Russia’s diesel export ban has curtailed supplies to global markets.
Diesel remains the primary fuel for freight transport, agriculture, construction and manufacturing across Europe, making prolonged shortages a concern for both economic activity and inflation.
China adds to global tightness
Morgan Stanley also highlighted China’s refining sector as an indirect contributor to the tightening global diesel market.
Chinese refiners have reduced crude processing rates, resulting in lower production of refined petroleum products.
Although China does not directly export diesel to Europe in meaningful quantities, reduced refinery activity limits overall product availability in global markets.
“China never supplies Europe with diesel directly,” the analysts said. But when “China runs less, there’s simply less product in the global system to spill westward.”
Prices already reflect supply concerns
Despite the tightening outlook, Morgan Stanley cautioned investors against expecting diesel prices to extend their rally significantly from current levels.
According to the bank, much of the expected supply deficit has already been priced into the market.
“The market is full priced — don’t chase,” the analysts said, suggesting that additional gains may require fresh supply disruptions or a further escalation in geopolitical tensions.
The report underscores how refining constraints, rather than crude oil availability, have become the key driver of global fuel markets. As Europe heads into the final months of the year with shrinking diesel stockpiles, traders and policymakers will be closely watching whether supply disruptions ease or intensify further.
With inputs from agencies.
