Fuel Theft vs. Fuel Variance: How to Tell in 24 Hours
Primary keyword: fuel theft detection
Last updated: 29 Oct 2025
Not every “missing liter” is theft. Here’s a fast, evidence‑based method to separate true theft from normal variance—using card logs, tank sensors, and GPS geofences.
- Resource Type : Blog
- Category: Fuel Management
- Audience: Fleet Owners & Managers; Ops Managers
- Tags: fuel, theft, reconciliation, geofence, sensor, card, variance
- CTA assets: 24‑hour audit checklist (CSV)
Why variance happens
- Metering differences (pump vs tank sensor vs ECU)
- Terrain & payload changes (hills, air‑con, load)
- Route drift and traffic congestion
24‑hour method (evidence trail)
| Check | Tool | Pass/Fail rule |
|---|---|---|
| Odo & trip distance | ECU/CAN vs GPS | |Δ| ≤ 2% = ok |
| Refuel location/time | Station geofence + card log | Inside fence ±10 min = ok |
| Tank level jump | Fuel sensor graph | Rise ≈ liters purchased |
| Idle while refuel? | Engine state | Engine off preferred |
| Pattern repeat | Exceptions queue | 2+ anomalies → investigate |
Tip: Keep a single “Fuel Evidence ID” per incident that links the card tx, GPS trip, and sensor chart.
Policy that works
- Refuel only at approved stations (geofenced)
- Engine off during refuel, receipt photo required
- Supervisor reviews anomalies next‑day
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