What September's 9.1% gasoline jump means for a plumbing van fleet, a landscaper and a pizza shop

The September consumer price report put gasoline up 9.1% on the month and 34.2% on the year, and gasoline alone accounted for more than half of the month's headline gain, according to HousingWire's breakdown of the Bureau of Labor Statistics release. For anyone who runs vehicles for a living, that is the line that matters, and it is easy to misread.

What the headline leaves out

We pulled the gasoline index itself from the BLS data API. The not seasonally adjusted index read 383.2 in September, against 359.7 in August and 285.6 a year earlier. That is the 34.2% annual gain. But it was 397.0 in May, so September's level is still about 3.5% below the spring peak. The 9.1% monthly figure is the seasonally adjusted version; the unadjusted rise was 6.5%.

The bigger point is timing. The CPI is a September average. The EIA's weekly pump survey shows regular gasoline at $4.157 a gallon on September 7, a peak of $4.478 on September 21, and $4.331 on October 12. That is a 14.7 cent drop in three weeks, about 3.3%. The bill you are paying this month is already a little lower than the one the CPI measured.

It may not stay lower. CNBC reported Wednesday that Brent crude was near $105.89 and WTI near $95.41 after an attack on a Saudi Aramco building, and that the IEA's monthly report warned of constraints in diesel markets into 2027. We have no basis for saying where pump prices go from here, and nobody else does either.

A five-van plumbing or HVAC company

Assume five service vans, each driving 25,000 miles a year at 15 miles per gallon. That is 1,667 gallons a van and 8,333 gallons for the fleet. At $4.331 the fuel bill is about $36,100 a year. If pump prices are 34% above a year ago, the same driving cost about $26,900 then. The gap is roughly $9,200 a year, or $767 a month.

Per truck that is about $1,840 a year. If a van runs six calls a day over 250 days, it is about $1.22 of extra fuel on every call. No one needs a surcharge sticker for $1.22, but ignoring it across 1,500 calls a van is how a margin quietly shrinks. CheckThisBiz lists 27,975 independent plumbing and 40,729 independent HVAC companies; our HVAC operating playbook covers how the better-run ones price a service call.

A three-crew landscaper

A crew truck at 12 miles per gallon covering 18,000 miles uses 1,500 gallons, and mowers, trimmers and blowers burn perhaps 240 more over a season, so call it 1,740 gallons a crew. At $4.331 that is about $7,540 a crew against about $5,620 a year ago, or $1,920 more. Three crews: $5,760, which is 1.4% of $400,000 in revenue. CheckThisBiz counts 44,163 independent landscaping companies, and most sell maintenance by the season.

The detail that matters for a landscaper is that the season is ending. This fuel bill largely resets to zero in winter, so the real exposure is the contracts you quote now for next spring at a price that assumes a fuel cost nobody can state.

A pizza shop with its own drivers

A delivery that takes a driver 8 miles round trip in a car doing 25 miles per gallon burns 0.32 gallons, or $1.39 at $4.331 and about $1.03 at last year's price: 35 cents more. At 300 deliveries a week that is about $106 a week, or $5,500 a year, paid either by your delivery fee, your driver's pocket or your margin. Our restaurant playbook is the place to start if you are reworking the delivery fee, and CheckThisBiz lists 605,380 independent restaurants, so this is not a niche problem.

What to actually do

• Do not reprice off the 34% figure. Pull your last three months of fuel-card statements and divide by jobs, routes or deliveries. That per-unit cost is your number, and it will be lower than the national headline if your drivers shortened routes.
• Put a review clause in anything quoted for 2027, not a flat price: a fuel adjustment tied to a published index such as the EIA's weekly price, so the clause is neutral and checkable.
• If you charge a flat delivery or dispatch fee, wait for two more weekly EIA readings before changing it. The October 20 release will show whether the three-week decline holds, and the geopolitical news cuts the other way. Waiting a week costs you a few dollars a van; a fee change you reverse costs customers.

Related: the September CPI report and what $6.20 diesel costs an owner-operator, a snow contractor and a mover. Our crude oil chart tracks the move behind the pump price.

Sources: Bureau of Labor Statistics CPI gasoline series via the BLS public API; U.S. Energy Information Administration weekly retail gasoline and diesel prices; HousingWire and CNBC reports of Oct. 14, 2026; CheckThisBiz business counts. Vehicle counts, mileage and fuel economy are illustrative assumptions, so substitute your own. This is market information, not investment advice.