US diesel prices fell below $6 a gallon on Saturday, November 14, 2026, averaging $5.998 nationwide, according to fuel-price tracker GasBuddy. It is the first time in more than two months that the national average has slipped under the $6 mark, capping a sharp retreat from the record highs of September. The drop brings the first meaningful relief in weeks for the truckers, farmers and businesses that run on diesel — although fuel still costs far more than it did a year ago.

Key Points

• The national average retail diesel price was $5.998 a gallon on Saturday, November 14, according to GasBuddy — below $6 for the first time in more than two months.
• Diesel topped $6 on September 10 and hit a record $6.519 on September 22, after breaking the 2022 record on September 3 at $5.820. In California, prices briefly exceeded $10 a gallon.
• Brent crude futures are down 18.5% over the past two weeks, and seasonal demand is softening as autumn driving falls and refinery maintenance ends.
• The earlier surge was driven by the US-Israeli war against Iran disrupting oil supplies and Ukrainian attacks on Russian refineries.
• Average US gasoline prices have also fallen below $4 a gallon this month, the first time since August 10, according to GasBuddy.

What Happened

Saturday's reading ended a run of more than two months above $6 a gallon. Diesel broke the record set after Russia's full-scale invasion of Ukraine in 2022, reaching $5.820 on September 3, crossed $6 on September 10 and hit a record $6.519 on September 22. In California, where refining capacity is tight and fuel standards are stricter than elsewhere, diesel briefly cost more than $10 a gallon.

The turnaround has been driven by crude oil. Brent crude futures are down 18.5% over the past two weeks, and diesel prices track crude closely. Seasonal factors are helping too. Demand typically softens in the autumn as people drive less, hurricane season winds down and the risk of Gulf Coast refinery disruption falls. Refinery maintenance is also largely finished by November, allowing production to recover, according to Patrick De Haan, GasBuddy's head of petroleum analysis.

Background: How Diesel Climbed Past $6

The surge that pushed diesel above $6 began with war. The US-Israeli war against Iran disrupted oil supplies, while Ukraine's systematic attacks on Russian refineries cut into production. Together, the two conflicts squeezed the global diesel market at a time when inventories were already tight, and prices climbed through September to levels never seen before.

The Trump administration tried several measures to ease the pain, including temporarily lifting federal taxes on red-dyed diesel, easing sanctions on Russian fuel and launching an $8 billion support programme to help farmers offset higher fuel costs during the autumn harvest. Those steps provided only limited relief while supply worries linked to the Iran war dominated the market.

US Diesel Prices: What the Drop Means for Truckers and Shoppers

For the trucking industry, every cent matters. A long-haul truck can burn through 100 gallons or more on a single cross-country run, so a fall of more than 50 cents from the September peak takes real money out of operating costs. Lower diesel prices ease the pressure on freight rates, and freight rates feed into the price of almost every product on a shop shelf.

Farmers are feeling the change too, in the middle of the autumn harvest, when diesel powers tractors, combines and grain trucks. The $8 billion federal support programme was designed for exactly this squeeze, but falling prices do more than any subsidy: cheaper fuel directly cuts the cost of bringing in the harvest. Consumers should see the benefit more slowly, as lower transport costs work their way into food and goods prices over the coming weeks.

Even after the drop, diesel remains far above its level of a year ago. At $5.998 a gallon, it is still roughly $2.25 more than the $3.74 average recorded a year earlier, so the relief is real but partial.

Reactions

GasBuddy's Patrick De Haan pointed to the calendar as much as to crude prices. Demand softens in the autumn as people drive less, hurricane season winds down and the risk of Gulf Coast refinery disruption declines, he said, while refinery maintenance is largely completed by November, allowing production rates to recover. In other words, the market is getting the seasonal help it usually gets at this time of year — on top of a sharp fall in crude.

The political backdrop has not gone away. High fuel costs were a major factor in this month's midterm elections, and the administration's fuel measures showed how seriously Washington took the price spike. With prices now falling, the pressure on the White House eases, but any fresh disruption in the Gulf could send them up again just as fast.

Why It Matters

Diesel is the fuel of the working economy. It powers the trucks that deliver groceries, the tractors that harvest crops and the construction machines that build homes. When diesel prices soar, those costs land on consumers through higher prices for food and goods — which is why the September spike fed directly into inflation and into the midterm campaign. A sustained fall below $6 would take pressure off inflation, give hauliers and farmers breathing room, and leave households with a little more money at the end of the month.

What Happens Next

Whether diesel stays below $6 depends on crude oil and on the war. If Brent keeps falling and demand stays soft, prices could drift lower still. But the market remains fragile: any escalation in the Gulf or a cold snap that lifts heating demand could push prices back up. Thanksgiving travel will be an early test of demand. For now, the direction is down — the first good fuel news in more than two months.

Frequently Asked Questions

How much is diesel in the US now?
The national average retail diesel price was $5.998 a gallon on Saturday, November 14, 2026, according to GasBuddy — the first time in more than two months it has been below $6.

Why did diesel get so expensive?
The US-Israeli war against Iran disrupted oil supplies, and Ukrainian attacks on Russian refineries cut production. Diesel topped $6 on September 10 and hit a record $6.519 on September 22.

Why is diesel falling now?
Brent crude futures are down 18.5% over the past two weeks, geopolitical tensions have eased, and seasonal demand is softening as autumn driving falls and refinery maintenance ends.

Is gasoline falling too?
Yes. Average US gasoline prices have fallen below $4 a gallon this month for the first time since August 10, according to GasBuddy.

Will diesel keep falling?
It depends on crude oil prices, the course of the Iran war and winter heating demand. If crude keeps dropping, diesel could fall further, but any fresh disruption could push it back above $6.

Read more: US gas below $4 a gallon and Russian diesel exports doubled in October.