Full Breakdown
Diesel Prices Surge as Trump Expands Red-Dyed Diesel Use
By Drooid · · How we work
Record Diesel Prices and Their Drivers
Diesel prices have risen sharply since the Iran war began in late February 2026. AAA data show diesel climbing from $3.76 per gallon before the conflict to a record $6.53 per gallon on September 22 — a 68% increase, the largest jump among major fuels. The national average settled at $6.32 per gallon in early October. Economists cite constrained oil supplies from damaged Middle-East refineries, reduced Russian diesel exports after Ukrainian attacks, and export curbs by China.
Trump Executive Order on Red-Dyed Diesel
President Donald Trump signed an executive order that temporarily waives the federal excise tax on red-dyed diesel—fuel normally reserved for off-road equipment—and permits its use on highways. The White House fact sheet says the Treasury, in consultation with the Defense Department, will defer tax payments for the remainder of the year without interest or penalties and will encourage states to adopt similar waivers. The order also directs officials to explore eliminating the deferred tax obligation altogether.
Official Statements & Responses
- The White House framed the action as short-term relief for farmers, construction firms, and truckers.
- Nebraska Governor Jim Pillen praised the order, noting it “greatly assist[s] farmers.”
- Agriculture Secretary Brooke Rollins reported a recent 15-cent per-gallon dip in diesel prices.
- The Group of Seven announced a “substantial release” of diesel stocks to temper global fuel prices, a move that preceded the executive order.
Economic Impact on Consumers
Diesel powers trucks, trains, ships, and many industrial processes. Moody’s chief economist Mark Zandi explained that each $1 increase in diesel can lift overall inflation by roughly 0.1 percentage point. With diesel up about $2.50 per gallon since the war’s start, the expected inflationary contribution is near 0.25 percentage points, according to the personal consumption expenditures (PCE) price index, which was running at a 3.4% annual rate in August. Royal Bank of Canada economist Michael Reid warned the effect will be a “drip” as higher freight costs filter through supply chains.
Criticism & Opposition
- Patrick De Haan, head of petroleum analysis at GasBuddy, cautioned that allowing broader use of dyed diesel “is easier said than done,” noting the complexity of state tax regimes.
- Andy Lipow, president of Lipow Oil Associates, described the tax waiver as a short-term consumer benefit that “doesn’t solve the underlying issue” of global refinery shortages.
Data & Statistics
- Price increase: 68% since the Iran war; 77% annual rise (AAA tracking since 2000).
- Tax rates: Federal excise tax 24.4 c/gal; average state tax 35 c/gal.
- Truck fill-up cost: Approximately $1,575 for 250 gallons; potential $150 savings if tax-exempt diesel is used.
- State actions: Between September 23 and October 2, ten states—including Texas, Oklahoma, and Alabama—adopted measures to expand access to dyed diesel for on-road vehicles.
What’s Next
The executive order remains in effect for the rest of 2026, with the Treasury tasked to defer diesel tax liabilities through year-end. The G7’s diesel release program is slated to continue over the next four months, providing up to 100 million barrels from emergency stockpiles. Ongoing conflicts in the Middle East and Ukraine will continue to shape global fuel supplies, leaving the long-term efficacy of the tax waiver uncertain.