Fuel monitoring
A sensor in the tank, tied to GPS, so every fuel movement carries a time, a location, a vehicle and a quantity — and an abnormal drop reaches you the day it happens rather than at month end.
Last reviewed 3 September 2026
What it is
An IoT fuel sensor installed inside the vehicle's fuel tank, reporting alongside GPS to a cloud platform. It measures the fuel level continuously, so a drop, a fill and a journey are all recorded against each other rather than reconciled from paperwork afterwards.
The output is not a fuel gauge on a screen. It is an account of every fuel event with a time, a location, a vehicle and a quantity attached to it.
The problem it solves
What this is actually for.
Fuel is one of the largest costs in a transport operation, and it is the one most often reconciled from documents rather than measured. A litre lost on one vehicle is invisible. The same loss on thirty vehicles, every week, is a significant amount of money that never appears as a single line anybody notices.
The usual symptoms are familiar: consumption that does not match the route, refuelling that does not match the receipts, and a suspicion about a vehicle or a driver that nobody can evidence either way. Without measurement, an accusation and a denial carry equal weight, and most managers let it go rather than accuse someone on a hunch.
The timing is the other half of the problem. Discovering a discrepancy during the month-end reconciliation means discovering a pattern that has had a month to establish itself.
Who it is for
Who this is built for.
- Transport and logistics fleets
- Where fuel is a major cost line and vehicles operate far from any supervision. The larger the fleet, the more a small per-vehicle loss compounds.
- Long-distance and cross-border operators
- Vehicles refuelling away from base, where the only record of a fill is the one the driver brings back.
- Construction and plant operators
- Machinery and vehicles fuelled on site, often from bowsers, where accountability is hardest.
- PSV operators
- Buses and matatus with predictable routes and therefore predictable consumption, which makes an anomaly easy to see once it is measured.
- Any fleet with a suspicion it cannot evidence
- Measurement settles it in both directions. It identifies real losses, and it clears drivers who have been quietly under suspicion for a consumption pattern that turns out to be the route.
How it works
What actually happens.
Install
An IoT fuel sensor is installed inside the vehicle's fuel tank by our technicians.
Measure
The sensor measures the fuel level inside the tank continuously, rather than sampling at the start and end of a trip.
Locate
GPS records the vehicle's location and movement at the same time, so a fuel event and a place are one record rather than two.
Transmit
Fuel and vehicle data are transmitted to the Nebsam cloud platform.
Monitor
Fleet managers access the information through the web dashboard or the mobile application, and alerts arrive without anyone having to go looking.
What you get
What is included.
Detecting loss
- Fuel theft and draining alerts
- The system identifies abnormal fuel level drops and generates an alert when unauthorised draining is detected — with how much was lost, when it happened, where it happened and which vehicle was affected.
- Real-time fuel level monitoring
- Current fuel levels across the fleet through the day, and the unusual changes that indicate a loss, a refill or something that needs explaining.
Accounting for fills
- Refuelling detection
- Every fill recorded with date, time, location, quantity added, and the fuel level before and after — so a receipt can be checked against what actually entered the tank.
- Verification against purchases
- Discrepancies between reported and actual fuel usage become visible as a matter of record rather than a matter of opinion.
Understanding the fleet
- Every fuel event located
- Fuel events are associated with a GPS location, so you can see where fuel was added and where it was lost.
- Reporting
- Consumption and fuel activity across the fleet, which is what identifies the high-consumption vehicles worth investigating first.
Installation and support
What happens after you decide.
The sensor is installed in the tank by Nebsam technicians. What a given vehicle needs depends on the vehicle and the tank, so the specification follows a survey rather than an order form — tell us the fleet and we will tell you what each vehicle takes.
Support covers the sensors, the platform and the reports. The reports are the part that repays attention: the first month usually establishes what normal consumption looks like for each route, and anomalies only mean something against that baseline.
Questions
Common questions.
How does the system detect fuel theft?
- It identifies abnormal fuel level drops and generates an alert when unauthorised draining is detected. The alert carries how much was lost, when it happened, where it happened and which vehicle was affected — which is what turns a suspicion into something you can act on.
Will it tell the difference between theft and normal consumption?
- Normal consumption is gradual and tracks the vehicle's movement; draining is an abrupt drop, often while the vehicle is stationary. The system looks for the abnormal drop rather than the total used, which is why the location and timing attached to each event matter so much.
Can I check refuelling against receipts?
- Yes. Every fill is recorded with date, time, location, quantity added and the fuel level before and after, so a receipt can be compared with what actually entered the tank.
How do I see the information?
- Through the web dashboard or the mobile application. Alerts reach you when an event occurs, so the system does not depend on somebody remembering to log in.
Will it work on my vehicles?
- That depends on the vehicles and their tanks, and it is established during a survey rather than assumed. Tell us what the fleet consists of and we will tell you what each vehicle needs before anything is quoted.
How long before it is useful?
- The alerts work immediately, but the reports become far more useful once there is a baseline. The first month generally establishes what normal consumption looks like on each route, and anomalies only mean something measured against that.
Does it also track the vehicle?
- Yes. GPS records location and movement alongside the fuel data, which is what allows every fuel event to be tied to a place. Fuel monitoring without location tells you a litre went missing but not where.
What if a driver disputes a reading?
- That is a fair question and the reason measurement helps both ways. The record shows the level before and after, the time and the location, so a dispute is resolved by evidence rather than by seniority — and drivers wrongly suspected are cleared by the same data.
Coverage
Where we install, and where we reach.
Branches
Nairobi
Kiambu Road, Ridgeways — next to Impact Motors
24/7, Monday–Sunday
Mombasa
Makupa Roundabout — next to Mass Petrol Station
24/7, Monday–Sunday
Nakuru
Lower Bedi Road
24/7, Monday–Sunday
Served by agents and technicians
Installation and support reach these towns through agents and technicians rather than through a branch office.
- Busia
- Eldoret
- Embu
- Garissa
- Homa Bay
- Isiolo
- Kericho
- Kilifi
- Kisii
- Kisumu
- Lodwar
- Malindi
- Marsabit
- Meru
- Nanyuki
- Thika
Who uses it
Sectors this is fitted for
Next step
Tell us about your vehicles.
Tell us what you run, where it operates and what has gone wrong before, and we will tell you what is worth fitting — including where the answer is less than you expected.