Most fleets don’t lose money to one big red flag. They lose it in small amounts spread across drivers, routes, and receipts, exactly the kind of unmonitored fuel spend that never shows up until you actually add it up.

Mid-sized fleets typically lose $800 to $1,200 a month this way. That’s not a worst-case number. That’s the average.

Where Unmonitored Fuel Spend Usually Hides

If you manage a fleet, an ag operation, or a logging crew running multiple vehicles on a shared fuel program, the kind of operation we work with every day, the risk almost never comes from one dramatic incident. It comes from several areas that are easy to overlook until you actually look at them.

Risk Category	What It Looks Like	Why It Matters
After-hours and time-of-day activity	Fill-ups outside normal work hours or scheduled routes	Signals fueling happening when nobody’s watching
Purchase type restrictions	Charges for snacks, car washes, or other non-fuel items on a fuel-only card	The card is being used for more than fuel
Driver accountability	No PIN or driver ID tied to the transaction	No way to know who actually fueled the vehicle
Location controls and reporting	Fill-ups outside the approved network, or a report you only see once a month	Little to no visibility until it’s already added up

A federal fraud case from early 2026 shows how far this can go undetected: a driver ran fake fuel charges through a company card for nearly two years before it was caught, adding up to over half a million dollars. Most fleets won’t see anything close to that scale, but the pattern behind it is the same one described above: small, repeated gaps that nobody was checking closely enough to catch early.

Why This Sneaks Up on Fleets

You won’t catch it from one big red flag. It’s usually a handful of small things that add up: a driver grabbing snacks on the company card, a truck topping off on a Saturday it wasn’t scheduled to run, a fill-up at a station nowhere near the route. Individually, each one is so small you might not even notice.

Add it up across a fleet of any size, and it’s exactly how unauthorized fuel spend ends up costing $800 to $1,200 a month without anyone noticing until the bill arrives. Industry coverage on fuel card fraud protection points to the same pattern across fleets nationwide: it’s an accumulation, not an event.

What Good Fuel Controls Actually Look Like

A dedicated cardlock program closes most of these gaps directly. Cards can be set to limit fuel type, gallon amounts, and time-of-day fueling windows. Each driver enters a unique driver ID number at the pump, so every transaction ties back to a person, not just a card.

Because every fill-up logs location, vehicle, and odometer reading in real time, fleets get visibility into every transaction as it happens instead of waiting for a monthly statement. For ag operations and logging crews running multiple vehicles through a shared card program, driver accountability matters even more, since it’s rarely one driver on one truck.

Unmonitored Fuel Spend: FAQ

Q: How much does unauthorized fuel spend typically cost a fleet?

A: Mid-sized fleets typically lose $800 to $1,200 a month, usually spread across small amounts rather than one large loss.

Q: What are the main risk categories fleets should check?

A: The most common areas are after-hours and time-of-day activity, weekend fueling patterns, non-fuel purchases on a fuel-only card, driver accountability, and location or reporting gaps.

Q: Why is unauthorized fuel spend so hard to catch?

A: It rarely comes from one obvious incident. It’s usually a handful of small gaps across drivers and vehicles that only add up to something significant once you look at the full picture.

Q: How can I check where my own fleet stands?

A: A quick way to check is Lakeview’s free Fleet Fuel Risk Assessment, which walks through the same risk categories covered here and shows you where your fleet’s exposure actually is.

Get Ahead of Unmonitored Fuel Spend

Timing, day-of-week patterns, purchase type, driver accountability, location and reporting: none of it requires an audit team to check. Most fleets can spot the gaps just by looking at the data they already have.

If you want an honest picture of where your own fleet stands, take the free Fleet Fuel Risk Assessment. It walks through the same categories covered here and gives you a clear sense of your exposure in a few minutes.