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A plain-English look at the three ways fuel money leaks out of a small fleet, and which ones you can actually control beyond the price per gallon.
- Fuel is one of the largest checks a small fleet writes, and the price per gallon is only part of the story; a real chunk leaks out through things you can control.
- ATRI put fuel at about 48 cents per mile in 2024, one of the two or three largest costs of operating a truck; a line that size deserves management, not autopilot.
- Leak one is how the truck is driven — hard acceleration, speeding, and idling burn fuel that does no work.
- Leak two is maintenance — underinflated tires, dirty filters, and poor tune quietly cut miles per gallon with no warning light.
- Leak three is the fuel itself, between the card and the tank — uncontrolled fuel cards invite abuse; set limits and actually read the statements.
Fuel is one of the largest checks a small fleet writes every month, and it is also the one most owners feel they cannot do anything about. The price is the price.
But the price per gallon is only part of the story. A real chunk of a fleet’s fuel spend leaks out through things an owner can actually control: how the trucks are driven, how well they are maintained, and how the fuel is purchased and tracked. The pump is not the only place fuel money disappears.
Here is where it actually goes, and how a small fleet plugs the leaks.
Fuel is too big a line to leave on autopilot
The American Transportation Research Institute put fuel at about 48 cents per mile in 2024. It is consistently one of the two or three largest costs of operating a truck, alongside driver pay and equipment. A line that size deserves management, not just a card and a shrug, because even a small percentage improvement on a number that large is real money at the end of the year.
The trap is treating fuel as a fixed cost of doing business. Part of it is. The controllable part is bigger than most owners assume.
Leak one: how the truck is driven
The same truck, on the same route, returns very different fuel economy depending on who is driving it and how. Hard acceleration, hard braking, speeding, and long idling all burn fuel that does no work. An idling engine in particular burns fuel while the truck sits still, turning time into expense with the odometer stopped.
This is coachable, and it is the cheapest fuel savings there is, because it costs nothing but attention. Knowing which trucks idle the most and which drivers run heavy on the throttle turns a vague sense that fuel is high into a specific, fixable list.
Leak two: how the truck is maintained
A neglected truck is a thirsty truck. Underinflated tires increase rolling resistance and cut fuel economy. A dirty air filter, a failing sensor, or a poorly tuned engine all quietly cost miles per gallon. None of these throw a warning light that says you are wasting fuel, so they get ignored, and the waste runs every mile until something is serviced.
This is why fuel and maintenance are the same conversation. The regular tire check and the scheduled service are not only about breakdowns. They are about not paying for fuel the truck is wasting because a tire is soft or a filter is clogged.
Leak three: how the fuel is bought and tracked
The third leak is the one owners look at least and lose the most to: the fuel itself, between the card and the tank. Fuel and fleet cards are convenient, and that convenience is exactly what gets abused without controls. A card with no limits is a card that can buy fuel for a personal vehicle, fill a buddy’s tank, or cover purchases that never went into a company truck.
The fix is controls, not suspicion. Set limits on the cards: a sensible gallon or dollar cap per transaction, restrictions to fuel only, and where possible a tie between the card and the specific vehicle or driver. Then actually look at the statement. A transaction larger than the truck’s tank, two fill-ups an hour apart, or fuel purchased far off the route are the patterns that show up when someone is reading, and stay invisible when no one is. As the Responsible Fleet team puts it: fuel is not one cost, it is three — the fuel you waste driving, the fuel you waste from neglect, and the fuel that walks off between the card and the tank.
What most people get wrong about fuel
Owners fixate on the price per gallon, because that is the number on the sign, and treat everything else as fixed. That gets it backward.
The per-gallon price is the part you cannot change. The driving, the maintenance, and the purchasing controls are the parts you can, and together they move the total more than chasing a few cents at the pump ever will.
As the Responsible Fleet team puts it: the price per gallon is the part you cannot control. The fuel you waste driving, the fuel you waste from neglect, and the fuel that walks off between the card and the tank — all three of those, you can.
Frequently asked questions
How much of a fleet’s fuel cost can an owner actually control?
More than most assume. The price per gallon is fixed, but ATRI put fuel at about 48 cents per mile in 2024, one of the largest operating costs — and the controllable part comes from three places: how the trucks are driven (idling and aggressive driving), how well they’re maintained (tire pressure and tune affect miles per gallon), and how fuel is purchased and tracked.
What’s the cheapest way to cut fuel costs?
Coaching driving habits. Hard acceleration, speeding, and especially idling burn fuel that does no work, and fixing them costs nothing but attention. An idling engine burns fuel while the truck sits still (U.S. Department of Energy), so knowing which trucks idle most and which drivers run heavy on the throttle turns ‘fuel is high’ into a specific, fixable list.
Does maintenance really affect fuel economy?
Yes, and quietly. Underinflated tires increase rolling resistance, and a dirty air filter, failing sensor, or poorly tuned engine all cut miles per gallon — with no warning light to tell you. That’s why fuel and maintenance are the same conversation: a regular tire check and scheduled service keep you from paying for fuel the truck is wasting.
How do I prevent fuel card abuse?
With controls, not suspicion. Set a sensible gallon or dollar cap per transaction, restrict the cards to fuel only, and where possible tie each card to a specific vehicle or driver. Then actually read the statements — a transaction larger than the truck’s tank, two fill-ups an hour apart, or fuel bought far off the route are the patterns that show up when someone is looking.
Is it worth managing fuel if I can’t control the price?
Yes. Fuel is too large a line to leave on autopilot — even a small percentage improvement on a number that big is real money over a year. You can’t change the price per gallon, but you can coach the driving, maintain the trucks so they aren’t wasting miles per gallon, and put real controls on the cards, which together move the total far more than chasing a few cents at the pump.
The bottom line
Fuel is too large a line to leave on autopilot. Coach the driving habits that burn fuel for nothing, keep the trucks maintained so they are not wasting miles per gallon, and put real controls on the fuel cards and actually read the statements.
Stop treating fuel as a fixed cost, and a number that felt untouchable becomes one of the easiest places on your books to find money.
Want to find the fuel money leaking out of your fleet?
This article is for general information and does not replace your own legal, safety, or DOT-compliance judgment. Verify the regulations for your jurisdiction and vehicle class.
The Responsible Fleet Team helps small and mid-size fleets get more out of GPS tracking, dash cameras, asset tracking, and ELD/compliance — one platform, one vendor, on flexible terms.