CO2 from our own trucks, with the method on the table.
Every figure on this page starts with a CargoFlex truck and what it recorded on the road. Where a reading is missing we model it, and we show how much of each total is measured.
The last six months
April to September 2026. Truck tractors on the CargoFlex truck sheet with a telematics unit. Updated 3 October 2026.
Month by month
Tailpipe CO2 of the whole fleet. The solid part comes straight from the trucks' fuel counters; the dashed part comes from our energy model. The thin line on top of each month is the conservative upper bound.
Gas against diesel, per kilometre
Distance-weighted averages over six months, by fuel type. The comparison baseline is our own diesel trucks, measured on the same roads in the same months; it is not matched for route or payload.
Where the CO2 comes down
Six levers. For each, what our data shows today and what is still to come.
Vehicle and fuel
53 of 69 truck tractors run on natural gas or dual fuel. Natural-gas trucks emit about a fifth less CO2 per kilometre at the tailpipe than our diesel trucks.
Bio-LNG
Bio-LNG from European sources cuts emissions further. Our figures do not count it yet: the blend in each tank is not recorded, so every kilogram of gas is booked as fossil gas.
Rail
Trailers ride the train on suitable long distances, such as Duisburg to Kaunas, while trucks handle the first and last kilometres. The trucks' counters do not see the rail legs, so they are not in these figures yet.
Ferry
Between the Baltic States and Germany our trucks cross the sea. We read it from the data: in six months no CargoFlex truck drove a kilometre in Poland, yet trucks worked on both sides.
Utilisation
Full trailers and fewer empty kilometres lower the CO2 per tonne. That needs cargo weights per trip, which we are adding.
Measurement
Fuel and distance from each truck's own counters, checked for resets and frozen readings, with gaps modelled and labelled.
How we calculate
Method version CF-CO2-0.2-demo. Every value on this site traces back to these steps.
1. Which trucks
Truck tractors on the CargoFlex truck sheet, matched to their Mapon telematics unit by VIN. Units of other companies that the same account can see are dropped before anything is stored. Vehicles without a unit are listed on the fleet page and left out of the totals.
2. Distance
Validated increments of each truck's CAN odometer, read at the start and end of every trip. Where the odometer chain has no valid step, or the odometer was frozen, the trip's GPS distance is used instead, and never twice.
3. Fuel
Increments of the cumulative CAN fuel counter, including fuel used while standing. Resets, impossible jumps and stalled counters are removed. What the counter measures depends on the truck: litres on diesel trucks, kilograms of gas on natural-gas trucks, and only the diesel on dual-fuel trucks.
4. Filling the gaps
Where a counter does not cover all fuel, an energy model fills the gap. It learns energy use per 100 km from well-measured diesel and gas truck-months, using engine type, make, the share of driving in the Alps and the Baltics, and average trip length.
5. From fuel to CO2
UK government conversion factors 2026 (DESNZ): 100% mineral diesel per litre and natural gas per kilogram. Tailpipe values are tank-to-wheel; figures including fuel supply add the well-to-tank factors, with LNG supply where the gas supply is unknown.
6. Comparisons
Our own diesel trucks, measured in the same month, over the same distance; and the same energy burned as diesel. Methane slip is not in any total: we show the extra CO2e per percentage point of slip instead.
7. Not included yet
Cargo weights, so no CO2 per tonne-kilometre yet. Bio-LNG credits. Rail and ferry legs from operations. Vehicle-specific VECTO and certificate-of-conformity values. These come with the operational database.
Monthly reports
Every month, every truck: distance, fuel, CO2 and how it was obtained.
Use your transport data, not generic averages.
For your Scope 3 and CSRD reporting, tenders and supplier questionnaires: CO2 per transport from the truck that drove it, with the measured share and the method stated.