Case 01 · TrucksSiphoning
Night parking
T-114 · Parking D1, Brno
22:10 parked, level542 L
02:37 engine off—
05:50 departure, level356 L
Distance driven0 km
Missing186 L
CANWithin gauge error, nothing flagged
WGCAlert at 02:41 with GPS and volume
Fuel theftTruck fleetsHeavy machineryCZ · AT · SK · SI
Your truck burns 5,000 litres a month. Up to 300 never reach the engine.
Siphoned at a night parking. Poured into a canister at the pump. Drained from an excavator over the weekend. The factory CAN gauge is off by 7–10%, so you never see it. Our sensors see every litre filled and every litre drained, with time, place and amount.
±1%sensor accuracy in the tank
7–10%error of the CAN fuel gauge
€200saved per 100 L per truck
FLEET · 42 VEHICLES · 3 ALERTS TONIGHTLIVE
Drain detected
T-114 · Parking D1, Brno
02:37 · engine off · ignition off · 49.17°N 16.57°E
−186 L≈ €372
T-220 · Fuel station, Linz · receipt 450 L, tank +412 L−38 L
EX-07 excavator · Site Bratislava · Sat 23:10−95 L
T-301 · Refill Ljubljana · matches receipt+520 L
Trusted by fleets in 150+ countries
UN World Food ProgrammeVentspils PortVic FloridoJV Technoton+ 12,000 fleets
Where the litres go
Three ways fuel leaves your fleet without leaving a trace
None of these shows up in a fuel-card report or on the dashboard gauge. Each of them shows up on ours within minutes.
Case 02 · TrucksCanister
At the pump
T-220 · Fuel station, Linz
Receipt, diesel450.0 L
Paid at €2.00/L€900.00
Level before118 L
Level after530 L
Not in the tank38 L
CARDShows 450 L paid, looks normal
WGCRefill +412 L vs receipt, gap flagged
Case 03 · MachineryWeekend drain
On the site
EX-07 · Excavator · Site Bratislava
Fri 17:00 level310 L
Engine hours, weekend0.0 h
Burned by engine (DFM)0 L
Mon 07:00 level215 L
Missing95 L
LOGRefuelling record matches on paper
WGCSat 23:10 drain, engine off, alert sent
Why you don't see it today
A 150-litre drain hides inside the CAN gauge's error.
The factory gauge is built to tell the driver roughly how much is left. Fuel cards show what was paid, not what went into the tank. A calibrated sensor in the tank closes both gaps.
±8%typical CAN gauge error: 350–500 L of noise on a 5,000 L month
±1%DUT-E calibrated sensor: a 20 L drop is already visible
0litres a police report usually brings back
T-114 · 600 L tank · 48 h
CANLooks like normal consumption. The 150 L drain at 02:37 is smeared inside the noise band.
Loss calculator
What does unaccounted fuel cost your fleet?
Enter your own numbers. Even a 2% loss on a 20-truck fleet adds up to tens of thousands of euros a year, walking away in canisters.
Fuel walking away, per year
€72,000 /yr
3,000 Llost per month
€6,000per month
€300per vehicle / month
Every tank = one vehicle's monthly loss
Saving just 100 L per truck per month is about €200 per truck. The sensor usually pays for itself within a few months.
Get a quote for my fleet →Two typical solutions
Trucks or machinery? Pick your starting point.
Same principle on both: measure the fuel directly instead of estimating it from CAN.
Truck fleetsDUT-E
Fuel level sensor in every tank
For tractor units, tippers, tankers and delivery trucks on long routes and overnight parkings.
- Stops
- Night siphoning · canister filling at the pump · fuel-card misuse
- Accuracy
- ±1% of tank volume
- Works with
- Your existing GPS tracker and platform
- No tracker?
- DUT-E GSM sends data on its own
Construction & heavy machineryDFM + DUT-E
Flow meter on the engine, sensor in the tank
For excavators, rollers, cranes, loaders and dozers that refuel from a bowser, not a fuel card.
- Stops
- Weekend draining · refuelling on paper only · inflated engine hours
- Measures
- Litres burned by the engine and litres in the tank
- Machines
- Excavators · rollers · cranes · loaders · dozers
- Works with
- Your existing GPS tracker and platform
Works with what you have
Tell us your telematics provider. We'll do the rest.
Our sensors connect to the tracker you already have, and the data appears in the platform you already use. No tracker at all? DUT-E GSM sends data on its own.
Which one do you use?
01We install
Sensor in the tank
DUT-E on trucks · DFM on the fuel line of machinery
02You have
Your GPS tracker
Connected over RS-485, CAN, analog or frequency
03API
Data in Webfleet
We configure the sensor, tracker and reports for you
✓Minutes
You get
Drain alerts by SMS and e-mail · refill vs receipt · litres per vehicle and per site
One contact, one project. Tell us you run Webfleet and we come back with a setup and a price.
Send my setup →Real results
Fuel theft stopped, not just reported.
−20%
Philippines · road-building machinery
20% less fuel, payback in under 3 weeks
A road-building contractor stopped fuel theft across 25 machines and recovered the whole investment in less than three weeks.
−50%
Israel · 1,000+ tanker trucks
Drained volumes cut in half
Integration partner Starcom Systems halved fuel-drain volumes and cut cargo insurance costs by 60%.
−45%
Qatar · 280+ construction units
45% lower fuel-distribution costs
Fuel tankers and site storage tanks brought under accurate control with DUT-E GSM sensors.
FAQ
Questions fleet owners ask
We already have GPS tracking. Why add a sensor?
Most trackers read the factory fuel gauge over CAN. That gauge is built to show the driver roughly how much is left, not to measure, and its error is 7–10%. A 100–200 L drain fits inside that error. A calibrated DUT-E sensor is accurate to ±1%, so every drain and every short refill becomes visible.
Which telematics systems do you work with?
Practically any: Wialon, Webfleet, Geotab, Navixy, Teltonika-based platforms and most local providers in Czechia, Slovakia, Austria and Slovenia. Tell us which one you use and we take care of the configuration.
We have no telematics at all. What then?
Then DUT-E GSM: a fuel level sensor with built-in GPS and GSM in one device. It sends data on its own, with no separate tracker needed.
Does it work on construction machinery without fuel cards?
Yes. On machinery we add a DFM flow meter that counts the litres the engine actually burns. Compare it with what was poured in from the bowser, and the gap is obvious.
How quickly do we learn about a drain?
As soon as the next data packet reaches the platform, typically within minutes. The alert shows the vehicle, location, time and the litres drained.
Tell us your telematics provider
We'll come back within one business day with a setup and a price for your fleet.