# DOE Diesel Up 3.5 Cents to $5.348, West-Gulf Spread at 98.9 Cents _Aug 4, 2026_ > DOE number rises 3.5 cents to $5.348/gal, now 41% above the 5-year median. Rocky Mountain leads regional gains at +3% on the week. The West-Gulf gap holds at 98.9 cents/gal. _Numbers as of Aug 4, 2026 pull._ The EIA weekly on-highway diesel survey priced Monday, August 3 at **$5.348/gal**, up **3.5 cents** on the week and 41% above the 5-year median for this calendar week. At the stated 6.5 mpg reference, that is **82.3 cents a mile** of fuel. The week's move adds about **$2.69** to the fuel cost of a 500-mile haul. [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/issues/diesel/2026-08-04/costpermile/diesel-cost-per-mile.png) - **Rocky Mountain (PADD 4)** diesel: **$5.285/gal**, up 3% week over week, the largest regional gain in this week's EIA on-highway survey. The region sits 39% above its 5-year median. - **Lower Atlantic (PADD 1C)**: **$5.168/gal**, down 2% on the week, the only EIA survey region with a meaningful decline. It remains 38% above its 5-year median. - **Gulf Coast (PADD 3)**: **$5.141/gal**, up 1% on the week. At 49% above its 5-year median, the Gulf Coast carries the widest vs-normal reading of any region in the EIA survey this week. - **California** reads **$6.716/gal**, up 1% on the week and 36% above its 5-year median. The West Coast (PADD 5) as a whole sits at **$6.130/gal**, paying **98.9 cents/gal** over the Gulf Coast (PADD 3). EIA's daily ULSD spot series placed New York Harbor at **$4.103/gal** and the Gulf Coast hub at **$4.105/gal** as of July 27. These are bulk, untaxed wholesale prices, not pump prices. They frame where retail came from, not what operators paid. WTI crude (Cushing spot) settled at **$84.25/bbl** and Brent (Europe spot) at **$91.82/bbl** as of the same date. Crude is roughly half the cost of a gallon at the pump, with a lag of days to weeks before a hub move reaches retail. *Data note: ULSD spot prices and crude benchmarks reflect July 27 settlement data, one week behind the Monday, August 3 retail survey.* --- Canonical URL: https://mondaydiesel.com/issues/2026-08-04