CO₂ emission class calculator
The CO₂ emission class calculator allows you to determine your vehicle’s emission class in just a few steps.
Vehicles with a first registration date before 01/07/2019 are automatically assigned to CO₂ emission class 1. This also applies to vehicles for which no legal regulation has yet been defined (such as certain heavy-duty vehicles).
Zero-emission vehicles (ZEV) are directly assigned to CO₂ emission class 5.
To verify your vehicle’s CO₂ emission class, three pieces of information are required:
- the date of first registration,
- the vehicle subgroup,
- the specific CO₂ emission value.
1 / Drive type
Select the drive type of your vehicle: Get Help
Diesel, petrol, hybrid & natural gas
Internal combustion engine, plug-in hybrids, CNG et LNG.
Electrical
100% electric drive on battery
Hydrogen
Fuel cell (FCEV) or H2 combustion.
2 / Date of first registration
The date of the first registration can be found in the registration certificate in field B.
Vehicle type
Please select the vehicle type of your vehicle:
Rigid truck
Rigid chassis.
The load rests on the truck.
Tractor unit
Intended to pull a semi‑trailer.
Other vehicles
Mobile cranes and special vehicles.
2 axles Get Help
Group 1s
2 axles
> 7.4 - 7.5 T
Group 1
2 axles
From >7.5t to 10t
Group 2
2 axles
From >10t to 12t
Group 3
2 axles
From >12t to 16t
Group 4
2 axles
>16 T
2 axles Get Help
Group 1s
2 axles
Less than 7,5t
Group 1
2 axles
From >7,5t to 10t
Group 2
2 axles
From >10t to 12t
Group 3
2 axles
From >12 to 16t
Group 5
2 axles
More than 16t
Additional information for the subgroup
If you do not know your subgroup, please fill in the following information:
Does your vehicle have a sleeper cab?
What is the rated power of the engine in kW?
Specific CO₂ emissions
You can find out your vehicle's specific CO₂ emissions in the:
- Registration Certificate in field V7
- Customer Information File (CIF) under item 2.3 or 2.6.1
- Certificate of Conformity (CoC) in field 49.5
CO₂ emission class
Based on the information you provided, we obtained the following result for the submitted vehicle:
CO₂ emissions:
CO₂ emissions:
CO₂ emissions:
CO₂ emissions:
CO₂ emissions:
CO₂ emissions:
For certain vehicles, no legal regulation exists yet. By default, CO₂ emission class 1 is assigned to your vehicle.
What should I do?
If necessary,
• Refer the CO₂ emission class parameter of your OBU to your service provider
• Provide the required documents: Registration certificate, Customer Information File (CIF), and Certificate of Conformity (CoC), if necessary, to your service provider.
You do not need to provide any supporting document for CO₂ class 1.
The procedure may vary depending on the service provider; consult the list of active service providers in Belgium (viapass.be/howtopay/).
The CO₂ class obtained is calculated based on the parameters you entered above. It is your responsibility to ensure that the data is entered accurately. Although this tool was created with due diligence, no guarantee can be given regarding the accuracy, timeliness, or completeness of the CO₂ emission classes it provides. Only the legal provisions in force at the time the vehicle uses a road subject to the kilometre charge are authoritative for determining the applicable CO₂ emission class for that vehicle.
Validity: the classification of a vehicle belonging to CO₂ emission class 2 or 3 is valid for 6 years after the date of first registration. A new check is carried out after this period, and a reclassification may be applied if necessary. This procedure is repeated every 6 years.