# U.S. gasoline inventories | PIER20 benchmarks Where do U.S. total motor gasoline stocks sit relative to their five-year seasonal range? This page shows U.S. ending stocks of total motor gasoline, finished product plus blending components (EIA series WGTSTUS1). Each week is compared to the same week in the five full years before that week. The chart shows the five-year average, minimum, and maximum. A reading above the five-year range is high for the season. A reading below is low for the season. Gasoline stocks build through the spring. Refineries run to fill tanks before the summer driving season. And draw from May to September. This is a seasonal gauge. It is not a price forecast. As of **31 July 2026**, the latest reading is **209.66 Million Barrels**. That is down 7.7% over the past year and below its long-run median of 215.75 Million Barrels. ## Summary statistics (full history) | Series | First | Latest | Min | Max | |---|---|---|---|---| | Total gasoline stocks | 210.98 | 209.66 | 178.74 | 263.23 | | Five-year average | | 223.35 | 194.14 | 256.05 | | Five-year minimum | | 217.22 | 181.00 | 250.73 | | Five-year maximum | | 228.17 | 200.20 | 261.67 | ## Last 24 readings | Date | Total gasoline stocks | Five-year average | Five-year minimum | Five-year maximum | |---|---|---|---|---| | 20 Feb 2026 | 254.83 | 244.04 | 239.11 | 247.67 | | 27 Feb 2026 | 253.13 | 240.42 | 235.72 | 245.40 | | 6 Mar 2026 | 249.48 | 237.09 | 231.99 | 242.84 | | 13 Mar 2026 | 244.04 | 234.85 | 230.76 | 240.27 | | 20 Mar 2026 | 241.45 | 233.19 | 226.29 | 239.09 | | 27 Mar 2026 | 240.86 | 232.09 | 223.84 | 237.56 | | 3 Apr 2026 | 239.27 | 231.10 | 222.79 | 235.86 | | 10 Apr 2026 | 232.94 | 230.03 | 222.31 | 234.98 | | 17 Apr 2026 | 228.37 | 229.03 | 222.52 | 235.29 | | 24 Apr 2026 | 222.30 | 227.85 | 221.24 | 235.69 | | 1 May 2026 | 219.79 | 226.65 | 220.31 | 235.41 | | 8 May 2026 | 215.71 | 225.38 | 218.11 | 234.30 | | 15 May 2026 | 214.16 | 224.47 | 216.89 | 233.56 | | 22 May 2026 | 211.59 | 225.27 | 217.05 | 235.83 | | 29 May 2026 | 214.96 | 226.86 | 218.22 | 239.33 | | 5 Jun 2026 | 215.14 | 228.24 | 218.21 | 241.35 | | 12 Jun 2026 | 214.24 | 228.89 | 219.35 | 241.53 | | 19 Jun 2026 | 216.30 | 228.44 | 219.89 | 239.04 | | 26 Jun 2026 | 213.97 | 228.33 | 220.30 | 237.87 | | 3 Jul 2026 | 212.06 | 228.47 | 219.10 | 236.15 | | 10 Jul 2026 | 210.53 | 228.31 | 218.48 | 235.70 | | 17 Jul 2026 | 211.29 | 227.33 | 218.36 | 233.15 | | 24 Jul 2026 | 211.30 | 225.15 | 217.70 | 230.17 | | 31 Jul 2026 | 209.66 | 223.35 | 217.22 | 228.17 | ## How to read this benchmark **What a high or low reading means.** A high seasonal reading means total gasoline has built faster than the time of year warrants. A bearish signal for crack spreads, because the summer draw has more inventory to work through. A reading at the bottom of the band means the product complex is scarce ahead of peak driving demand; the market prices that as stronger refinery margins and firmer pump-price support. **Why the five-year same-week average as the comparator.** Energy series move with the calendar year. A raw level cannot say if the market is tight or slack. This page ranks each week against the same week in the five full years before it. A July reading is judged against prior Julys, not against the full year. The baseline uses only earlier years. The current year never enters its own baseline. The rule allows one week of tolerance when holidays shift the report week. **How the seasonal lines are built.** For each date, the reference is the same EIA week number (plus or minus one week) in the five full calendar years before it. Each reference year adds one value (the mean of its tolerated observations). The average, minimum, and maximum use those five yearly values. The lines start once a five-year window exists. The window rolls forward as old years leave. **Limitations.** The five-year window moves as history rolls forward, so an extreme from a decade ago no longer anchors the range. Source revisions can move history. Total gasoline stocks is one input to the market balance. Prices also move on the weekly surprise versus expectations, not on the level alone. Treat the chart as context for supply and demand conditions, not investment advice. ## How this benchmark is used **The summer driving-season build.** Refiners time their maintenance and run rates to stock gasoline ahead of Memorial Day-to-Labor Day driving demand; the seasonal build's size versus the five-year band is the standard read on whether the market enters the driving season well supplied. The seasonal low around late September historically marks the switch back into the rebuild. **The EIA five-year range convention.** The Weekly Petroleum Status Report uses a five-year average and range. The Weekly Natural Gas Storage Report does the same for gas. This page uses the same idea with a strict same-week rule. It uses five full prior years and allows one week of tolerance. The current year never enters the baseline. Our average can differ slightly from EIA tables when holiday weeks differ. ## Frequently asked questions **What is the current U.S. gasoline inventories?** As of 31 July 2026, the latest reading is 209.66 Million Barrels. That is down 7.7% over the past year and below its long-run median of 215.75 Million Barrels. **How often is this benchmark updated?** This benchmark is built on weekly data. The page is refreshed when the source publishes new observations; the freshness block below the chart shows the exact data-through date and when PIER20 last fetched the file. **What data sources does this chart use?** The chart is built from Total gasoline stocks, Five-year average, Five-year minimum and Five-year maximum, sourced from the U.S. Energy Information Administration (EIA). **What is the highest and lowest Total gasoline stocks has reached?** The percentile cell ranks the latest reading against the full sample. The 100th percentile is the highest on record. The 0th is the lowest. The five-year range is relative. Read full-history extremes on the full chart range, not only on the seasonal range. **How is this different from finished motor gasoline stocks only?** This page is total motor gasoline (WGTSTUS1). Finished barrels plus blending components. The ~200+ million barrel stockpile the Weekly Petroleum Status Report headlines and traders mean by “gasoline inventories. ” Finished-only stocks (WGFSTUS1) are a much smaller residual after most inventory moved into blendstocks; they sit near the teens of million barrels and are not the WPSR headline series. The U.S. gasoline demand page is a different cousin again: product supplied (flow), not tanks (stock). **Why does the five-year range only start five years into the history?** A baseline needs five full prior years of observations. The current year never enters its own baseline. The first five years of a series have no complete reference window. Earlier readings plot without a seasonal reference. ## Methodology - Formula: seasonalReference(t) = same EIA week (±1 week) in the five complete years before t; average/min/max of the per-year values - Frequency: Weekly - Sources: Total gasoline stocks (WGTSTUS1) https://www.eia.gov/dnav/pet/hist/LeafHandler.ashx?n=PET&s=WGTSTUS1&f=W; Five-year average (WGTSTUS1#seasonalAvg) https://www.eia.gov/dnav/pet/hist/LeafHandler.ashx?n=PET&s=WGTSTUS1&f=W; Five-year minimum (WGTSTUS1#seasonalLow) https://www.eia.gov/dnav/pet/hist/LeafHandler.ashx?n=PET&s=WGTSTUS1&f=W; Five-year maximum (WGTSTUS1#seasonalHigh) https://www.eia.gov/dnav/pet/hist/LeafHandler.ashx?n=PET&s=WGTSTUS1&f=W. Data via the U.S. Energy Information Administration (EIA). - Data through: 31 July 2026 - Last refreshed: 11 Aug 2026 Full interactive chart: https://pier20.com/benchmarks/us-gasoline-inventories Disclaimer: research software output, not investment advice.