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Econ Blog
The pump price is the most visible inflation signal in America. The CPI 'energy' index is a basket, and the difference between the two is where SMB fuel budgets get blindsided.
Walk into any small business that runs trucks, vans, or delivery routes and ask which inflation number matters to the budget. It will not be the headline CPI you read in the newspaper. It will be the pump price, the one number every owner watches weekly without anyone telling them to.
The CPI "energy" index, the line item the BLS reports as energy inflation, is a basket. It bundles gasoline with electricity, utility gas, and home heating fuel. The four components rarely move together, and the headline number smooths the signal that fuel-heavy SMBs feel most.
vs same week last year
Percentage-point spread vs the headline gauge
Pre-pandemic the average sat near $2.60. The 2020 collapse, the 2022 spike past $5, and the partial normalization that followed are all visible in one chart. The SMB takeaway: pump prices move in discrete shocks, not slow drifts. A fuel-cost forecast built on average growth assumptions will miss the actual shape of the exposure.
The Consumer Price Index does not have a single "fuel" line. The "energy" rollup BLS publishes combines four distinct components, each with its own price dynamics.
The practical consequence: when gasoline swings, CPI Energy moves less than the pump. When utilities drift up, CPI Energy moves while the pump sits still. For a delivery business, the relevant number is the first component, not the basket.
Both lines track the same direction, but gasoline's swings are routinely 1.5 to 2x the amplitude of the CPI Energy basket. When the press reports that 'energy inflation eased,' pump prices may have eased less. Reading the basket as a proxy for fuel exposure understates real volatility.
Operators who buy diesel weekly, run sales reps with company cars, or contract with last-mile delivery vendors do not budget against headline energy inflation. They budget against the EIA Weekly Retail Gasoline Prices report, the same series this post uses for its primary data.
Prices are collected from a survey of approximately 900 retail outlets every Monday and represent self-service cash prices including taxes. Data are released Monday afternoon and reflect the price as of 8:00 a.m. local time the same day.
A weekly read with same-week release is operationally usable. A monthly CPI release that bundles gasoline with electricity is a press headline, not an input to a fuel-cost forecast.
Stripped of trend, the seasonal pattern is consistent: prices rise from February through Memorial Day, plateau through summer driving season, and slacken October through December. The 2022 line is the outlier. Every other year fits the pattern within a roughly $0.50 band. Seasonality is plannable; the level is not.
Two patterns emerge when you look at gasoline as its own series rather than as a CPI Energy component.
Headline CPI cooled meaningfully through 2024-25, but Core PCE, the Fed's preferred gauge, hovers slightly higher and the last mile to 2% is the hardest.
The yield curve inverted in mid-2022 and stayed inverted through late 2024, the longest run since the 1970s. This inversion never triggered a recession.
Unemployment behavior in the 2001 dot-com bust, the 2008 crisis, and the 2020 pandemic shock looked nothing alike, and neither did the recoveries.