A tank that empties without the vehicle moving — fuel monitoring for commercial fleets. Fuel monitoring for fleets
Where the diesel goes

The tank went down. The vehicle did not move.

That one sentence is the whole argument for fuel monitoring. Everything else — consumption reports, mileage per vehicle, driver comparison — is useful. But a drop with no distance against it is the thing a slip book will never show you.

Litres against kilometres
A slip book cannot tell you this
A calibrated sensor reads the tank continuously and the GPS records what the vehicle was doing at the same moment. Fill, burn, idle, drain — each one looks different, and the one that matters is the drop with no kilometres behind it.
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Tank level ledger
One vehicle, one day

Level rises at the pump
Fill recorded, matched against the slip

Fill

Level falls on the run
Kilometres against litres, mileage per vehicle

Burn

Level falls while stationary
Engine running at a halt, burning for nothing

Idle

Level falls, engine off
Overnight halt, no kilometres, alert raised

Drain

Illustrative view. Sensitivity and alert thresholds are calibrated per tank and per fleet.

01
Calibrated Tank Sensor
Read directly from the tank, calibrated to its shape, logged continuously. Not a dip stick and not a driver’s estimate.

02
Drain Alerts With a Location
An abnormal drop raises an alert with the time and the GPS position on it — so a pattern of night halts becomes visible.

03
Fill vs Slip Reconciliation
What actually went into the tank against what the bill says went in — the gap that short-filling lives in.

04
Mileage Per Vehicle
Consumption by vehicle, route and driver over time — so a rising cost has a name against it, not just a bigger bill.

Fitted on
Trucks & long-haul
Night halts on a highway, hundreds of kilometres from a supervisor

Tankers & bowsers
Where the cargo and the fuel are both worth watching

DG sets & plant
Generators and site equipment that never move but still burn diesel

Inside the system

From a sensor in the tank to a number finance can use

What goes on the vehicle, how a theft is told apart from a hard day’s driving, what the numbers are worth to the people paying the bill, and where the data ends up.

The reading is only as good as the fitment

This is where most fuel monitoring projects fail. A sensor that is not calibrated to the shape of the tank reads wrong on a slope, and a fleet that stops trusting the numbers stops looking at them.

  • Calibrated to the tank’s actual shape
  • Trucks, tankers, buses, DG sets and plant
  • Tamper detection on the sensor itself
  • Runs alongside the GPS device already fitted
  • Readings smoothed for slope and road shake
  • AIS 140 certified hardware

Fuel level sensor fitted and calibrated to a commercial vehicle tank

Telling a theft from a hard day

Every fuel system can see the level falling. The value is in what the level is compared against — distance covered, engine state, and where the vehicle was standing when it happened.

  • Drop with no kilometres behind it
  • Sudden loss versus a slow drain
  • Matched against unscheduled halts
  • Fill short of what the slip claims
  • Alert with GPS position and timestamp
  • Thresholds tuned per fleet

Fuel drop alert matched against vehicle position and engine state

A number instead of an argument

Fuel is usually the largest controllable line in the operating cost and the one with the least evidence behind it. Most of the return on this shows up in the conversations it ends.

  • Mileage per vehicle, route and driver
  • Idling quantified in litres, not minutes
  • Fuel cost attached to the trip that used it
  • Evidence for a vendor or slip dispute
  • Trend by month, before the ledger shows it
  • Exportable for audit and reimbursement

Fuel consumption and cost reports per vehicle for the finance team

Where the alert lands

A drain alert at 2am is only useful if it reaches somebody who can act on it, and the monthly numbers are only useful if they reach the system finance already works in.

  • Alerts routed to the right supervisor
  • Fleet-wide tank levels on one screen
  • Mobile app for levels and alerts
  • Low-fuel warning before a vehicle strands
  • Fuel data alongside trips in the same platform
  • Pushed into SAP or your logistics ERP

Fuel monitoring dashboard alerts and ERP integration FleetRobo

What you are buying into

Fuel sensors on a platform that is already tracking the vehicle

Litres vs km
Every drop read against what the vehicle was doing

AIS 140
Certified devices, ICAT and ARAI approved

1,20,000+
Vehicles monitored on FleetRobo

SAP & ERP
Fuel data pushed without manual entry

The practical questions

Hardware, sectors, rollout and compliance

The things a procurement team asks after the demo — what sensor goes on which tank, whether it has been done for your kind of asset, how long fitment takes, and what certifications sit behind it.

Sensor & hardware
Sensors sized to the tank, not the other way round
A sensor that is too short for a deep tank reads nothing at the bottom, and one calibrated to a generic profile reads wrong on an irregular tank. This is the layer every downstream report depends on.

  • Sensor lengths from 700mm to 2000mm — trucks, tankers, irregular tanks and DG sets
  • Per-tank calibration, so the reading holds on a slope and on rough road
  • Tamper-resistant fitment, with the sensor and GPS device supplied as one unit
Fuel level sensor sized and calibrated for a commercial vehicle tank

Fuel monitoring across logistics cold chain construction and generator sets

Built for your sector
Different assets lose fuel differently
A long-haul truck loses it at a night halt. A reefer loses it because the unit runs while the vehicle is parked. A generator at a remote site loses it between refills nobody witnessed. Same sensor, different question.

  • Road freight and distribution — long-haul, tankers and multi-depot networks
  • Cold chain and reefers — where the unit burns fuel with the vehicle standing still
  • Construction, mining and plant — earthmoving equipment on sites with no fuel controls
  • DG sets and telecom towers — remote sites where a refill is hardest to verify

Getting it running
Fitment, calibration and the first few weeks
Fuel monitoring is not a software rollout — somebody has to open every tank. How that is sequenced across a working fleet usually matters more to a transport head than any feature on this page.

  • Fitment scheduled around your vehicle availability, depot by depot
  • Calibration verified against a known fill before the vehicle goes back out
  • Alert thresholds tuned over the first few weeks, not set and forgotten
  • Pan-India support, so a sensor fault on a distant route does not mean a blind vehicle
Fuel sensor fitment and calibration rollout across a fleet

Fuel reports AIS 140 compliance and ERP integration FleetRobo

Compliance & ERP
What procurement will ask for
For a tender-driven or regulated fleet, the certifications matter as much as the product. And for anyone putting fleet data in the cloud, the IT team has its own list.

  • AIS 140 certified hardware — ICAT and ARAI approved, ready for regulated and tender fleets
  • ISO 9001 and ISO 27001 — quality and information security certification behind the delivery
  • SAP and logistics ERP — fuel data synced without duplicate entry
  • Export-ready reports — for audits, contractor reviews and reimbursement

Fleets on FleetRobo

Enterprises accounting for their diesel on FleetRobo

Automotive, chemicals, energy, manufacturing and BFSI fleets — fuel, tracking, trips and compliance reporting on one platform.

Client roster
Binary Semantics group

Toyota
Maruti Suzuki
Honda
Hyundai
Hero MotoCorp
Deepak Fertilizers
AU Small Finance Bank
LivPure
TotalEnergies
Indian Oil
Mahindra
Jindal Steel

Long-haul & distribution
Night halts hundreds of kilometres from any supervisor

Cold chain & reefers
Where the unit burns fuel with the vehicle standing still

DG sets & remote sites
Refills nobody was there to witness

See it on your own tanks
Tell us your vehicle mix and tank types, and we will walk through sensor fitment for them.

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Before you book a demo

Questions fleet and finance teams ask us first

Accuracy, fitment, false alerts, warranty and cost. Anything not covered here, ask on the call.

Fuel monitoring — buyer questions
8 entries

01
How accurate is the reading, really?

Accuracy depends more on the fitment than on the sensor. A sensor calibrated to your specific tank shape, with readings smoothed for slope and road shake, gives a number you can act on. One dropped into a generic profile does not, and that is why some fleets have tried fuel monitoring before and stopped trusting it. We will show you the calibration method on the call rather than quoting a percentage that means nothing without it.
02
Will it raise false alarms on rough roads or slopes?

Fuel sloshes. A raw reading on an Indian highway would alert constantly, which is why readings are smoothed and a drop is only flagged when it holds and when the vehicle state supports it. Thresholds get tuned over the first few weeks of a deployment. An alert feed nobody trusts is worse than no alerts, and this is the most common reason fuel projects quietly die.
03
Does the tank have to be opened? How long does fitment take?

Yes, the sensor goes into the tank, so every vehicle needs to come in. That is the real project risk here, not the software. Fitment is scheduled around your vehicle availability, usually depot by depot, and calibration is verified against a known fill before the vehicle goes back out. Tell us your fleet size and how many depots on the call and we will give you a phased plan.
04
Does it void the vehicle warranty?

This depends on your OEM and your specific warranty terms, so we will not give you a blanket answer. It is worth raising with your OEM or dealer before fitment, particularly on vehicles still under warranty. Many fleets fit on older vehicles first for exactly this reason. Bring the question to the call and we will tell you what we have seen with your make.
05
What if a driver tampers with the sensor?

A sensor that goes quiet is itself a signal. Tamper and disconnection are flagged, so a vehicle that stops reporting fuel shows up on the same board as one reporting a drain. Fitment is tamper-resistant, but the honest position is that determined tampering is detectable rather than impossible — and detection is what you need for a conversation.
06
Can it be fitted on a DG set or site equipment?

Yes, and for a generator the question is different. There is no odometer to compare against, so the check is refill against runtime — how much was reportedly filled, how long the set actually ran, and whether the two agree. Telecom towers, plant rooms and remote sites are where refills are hardest to verify and where this tends to pay back fastest.
07
How is it priced?

Sensor and fitment per vehicle, plus a subscription for the platform. Sensor cost varies with tank size, and the price changes if you already have FleetRobo GPS fitted since the fuel sensor runs off the same device. Share your vehicle count and tank types on the demo call and you will get a written quote. The demo is free.
08
What happens on the demo call?

We open a real fuel graph rather than slides — the fill, the burn, the idling and the drop with no distance behind it, and what the alert looked like when it fired. Bring your vehicle mix, tank types and how many depots, and we will talk through sensors and fitment sequencing for them.
Still weighing it up?
Book a free demo and bring your vehicle mix and tank types to the call.

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Get started

See a real drop on a real tank

In the demo we open an actual fuel graph — the fill at the pump, the burn on the run, the idling, and the drop with no kilometres behind it. Bring your vehicle mix and tank types and we will talk through sensor fitment for them. Free, and no commitment.
Sensors calibrated per tank
Trucks, tankers, reefers and DG sets
AIS 140 certified hardware
No commitment required