# DOE Diesel Rises 31.8 Cents to $6.285, Lower Atlantic Up 9% _Sep 15, 2026_ > The DOE diesel index rose 31.8 cents to $6.285/gal for the week of Sept. 14, now 68% above its five-year median. At the stated 6.5 mpg reference, that is 96.7 cents a mile. _Numbers as of Sep 15, 2026 pull._ EIA's weekly on-highway diesel survey for the week of Sept. 14 put the Monday number at **$6.285/gal**, up **31.8 cents** from last week. At the stated 6.5 mpg reference, that is **96.7 cents a mile**, and the week's move adds about **$24.46** to the fuel bill on a 500-mile haul. The index now sits 68% above its five-year median. [Chart: Diesel fuel cost per mile (at 6.5 mpg)](https://mondaydiesel.com/costpermile/diesel-cost-per-mile) ([data](https://mondaydiesel.com/costpermile/diesel-cost-per-mile.md) — chart image: https://mondaydiesel.com/charts/costpermile/diesel-cost-per-mile/chart.png) - **Lower Atlantic (PADD 1C)** posted the largest regional gain in EIA's weekly survey, up 9% week over week to $6.096/gal, 66% above its five-year median. - **East Coast (PADD 1)** rose 7% on the week to $6.158/gal, 64% above its five-year median. - **Brent crude (Europe spot, per EIA):** $109.51/bbl as of Sept. 9, up 12% on the week, the biggest percentage move of any series in this week's digest. Brent sits 51% above its five-year median. - **WTI crude (Cushing spot, per EIA):** $97.26/bbl as of Sept. 9, up $4.57/bbl from $92.69/bbl on Sept. 4. The DOE retail number moved up 31.8 cents over the same days. Crude is roughly half the cost of a gallon of diesel, and moves at this scale carry forward to the pump with a lag of days to weeks. - **West-vs-Gulf gap:** the West Coast (PADD 5) at $7.250/gal sits 122.3 cents/gal over the Gulf Coast (PADD 3) at $6.027/gal. California on-highway diesel came in at $8.039/gal, 62% above its five-year median. EIA's daily spot series put Gulf Coast ULSD at **$4.832/gal** and New York Harbor ULSD at **$4.850/gal** as of Sept. 9, the nearest business day before Monday's survey. Both are untaxed bulk wholesale prices, not pump prices. The retail-minus-spot gap stands at **$1.453/gal**, a proxy for the full hub-to-pump layer including federal and state fuel taxes and distribution costs. --- Canonical URL: https://mondaydiesel.com/issues/2026-09-15