Brent Forecast: EIA Lifts Q4 Outlook to $105 on Diesel Squeeze

A $14 Upgrade in One Month

The U.S. Energy Information Administration has sharply raised its near-term oil price outlook. Its October 2026 Short-Term Energy Outlook now expects Brent crude to average $105 per barrel in the fourth quarter of 2026. That is $14 above the agency's forecast a month earlier 1. For the full year, the EIA puts Brent at an average of $96, up from $69 in 2025. It expects prices to ease to $84 in 2027 1.

The timing of the revision is notable. The agency raised its forecast even though it expects Middle East oil production and flows to increase 1. Ordinarily, more supply from the region would cool prices. The EIA's reasoning suggests the market has become fragile enough that expected supply gains are being outweighed by disruption risk and shortages of refined products.

Three Pressures Behind the Revision

The EIA points to three linked forces.

Pipeline attacks. Attacks on Saudi Arabia's East-West pipeline show how exposed physical oil flows remain 1. The agency says the episode highlights the potential for continued swings in both flows and prices 1.

Draining inventories. The pipeline volatility is happening while global oil stocks are being drawn down 1. Inventories are the buffer that normally absorbs supply shocks. A smaller buffer means each disruption has a bigger effect on prices.

Diesel tightness. The EIA describes diesel markets as extremely tight 1. Refiners need more crude to produce enough diesel to meet demand, and that extra crude demand pushes up oil prices as well 1. Here, a shortage of a refined product is feeding back into the price of crude itself.

Consumers are already seeing the effects. U.S. retail gasoline and diesel prices rose sharply in September, according to the outlook 1.

Industry Warns the Cushion Is Nearly Gone

The EIA's concern about inventories matches a stark warning from the oil industry. Speaking at the Energy Intelligence Forum in London, Saudi Aramco Chief Executive Amin Nasser said fewer than 6 billion barrels remain in global commercial inventories. He added that most of that oil cannot practically be brought to market 2. "The system is already straining," he said 2.

Nasser estimated that more than 1 billion barrels have been drawn, mostly from onshore commercial stocks, since the current Middle East crisis began 2. Governments and energy companies released large volumes this year in response to disruptions linked to the Middle East conflict and the war in Ukraine 2. Executives now warn that the usable buffer is nearing critically low levels. That leaves the market exposed to price spikes if Middle East exports or other major sources are interrupted again 2.

The two perspectives broadly agree. The EIA speaks of "ongoing withdrawals" of inventories in neutral terms 1. Nasser goes further, saying most of the remaining stock is effectively unavailable 2. If he is right, the effective buffer is thinner than headline inventory figures suggest. That could help explain why the EIA chose to raise its forecast despite expecting more supply.

Nasser's role also matters. As head of the world's largest oil producer, which operates the very pipeline that was attacked, he has his own perspective on supply security. Still, his figures are consistent with the EIA's direction of travel.

Why Markets Should Pay Attention

The EIA's forecast makes a clear claim: the fourth quarter of 2026 is the pressure point, and prices should ease in 2027 1. The agency also expects U.S. crude production to keep rising, from 13.7 million barrels per day in 2025 to 13.9 million in 2026 and 14.3 million in 2027 1. That domestic growth is one reason relief is expected next year.

The path to that relief is narrow, however. Several channels could carry the effects into wider markets:

• Inflation. Higher gasoline and diesel prices, already visible in September, feed directly into inflation readings 1.
• Freight and logistics. Diesel matters disproportionately here, so a squeeze in that market spreads quickly through the economy.
• Monetary policy. Higher energy costs could complicate the outlook for interest rates, a concern raised alongside the inventory warnings 2.

The Bottom Line

The $105 call should be read less as a precise target and more as a sign that the oil market has lost its margin for error. On their own, the pipeline attacks, the diesel shortage and the inventory drawdowns would each be manageable 12. Together, they create a market where the next disruption could move prices far more than usual. The EIA's expected 2027 decline is plausible if Middle East flows recover as forecast. For now, though, the risks appear weighted toward higher prices, not lower.