US Refineries Keep Shifting Yields From Gasoline to Diesel

American refiners have spent 2026 trading gasoline output for diesel and jet fuel, with federal statistics showing the rebalancing gathering pace month after month as margins on mid-distillate fuels stay unusually attractive.

New figures from the Energy Information Administration, drawn from the agency's monthly petroleum supply statistics covering data through August 2026, show the yield of motor gasoline has run under 45 percent in every month of the year so far.

That marks a departure for a refining fleet that historically turns roughly 45 to 50 of every 100 barrels of crude into gasoline.

Even with prices at the pump running high, the gasoline yield has come in below the lowest monthly level recorded across the 2021 to 2025 window in each month of this year.

The counterweight has been diesel-class output, with distillate yields running above their five-year average in every month and consistently ahead of where they stood in 2025.

Jet fuel has traced the same path, with the nationwide average jet yield clearing 12 percent for the first time in March 2026 and holding at or above that mark through the August figures.

Jet yields were already reaching multi-year highs through most of 2025, and firm aviation-fuel margins in 2026 have kept refiners leaning on that outlet.

Together, gasoline, distillate and jet fuel normally make up 85 to 90 percent of everything the US refining system produces from each barrel it runs.

The agency ties the tilt to elevated crack spreads and refining margins on distillate fuel for most of 2026, a symptom of constrained worldwide availability of those fuels.

For engineers and procurement teams, a sustained yield migration of this kind is a plant-level operating story rather than a market statistic.

Cutting gasoline yield while lifting diesel and jet output generally means running crude and downstream units harder toward the mid-boiling range, which leans on hydrotreating and conversion capacity that already operates at high severity.

Sustained operation at those conditions accelerates catalyst deactivation and pushes turnaround scheduling up the agenda, because a slipped reactor window can erase the margin gain that justified the slate change.

Metallurgy and inspection deserve attention as well, since distillate circuits running at higher throughput see different sulfur and nitrogen profiles and fouling behavior that can force recalibrated corrosion-monitoring intervals.

For equipment suppliers, the signal is that distillate-side hardware such as high-pressure separators, hydrogen compressors and fired-heater convection sections will keep drawing retrofit spending even with the gasoline pool shrinking.

Fuel buyers and logistics engineers face the mirror image: with fleetwide distillate and jet yields holding above seasonal norms, storage terminals, blending operations and pipeline batching schedules all carry more mid-distillate traffic through the rest of 2026.