Emission class is not vehicle category
The RDW emission class is a number describing a vehicle’s harmful emissions; a higher class generally indicates a cleaner vehicle. The vehicle category—passenger car, van or truck—is a separate data field. Access rules depend on both, as well as fuel, location and travel date.
The RDW maps European standards to Dutch classes; for example, Euro IV maps to class 4 and Euro V to class 5. The registration data, not a vehicle advertisement, should be used.
Where to check the class
The RDW points to field V.7 on the registration certificate for the emission class. If the European environmental class is missing, the RDW may determine the class using the first-admission date. Contact the RDW if the recorded value appears incorrect.
Electric vehicles use class Z in the RDW emission-class information. Heavy trucks also have a separate CO₂ emission class for other purposes; do not confuse that with the Euro/emission class used in zone access rules.
Class alone does not grant access
A class that satisfies one low-emission zone may not satisfy a zero-emission zone. The vehicle category, first-admission date, local signs and any exemption may change the result.
Use the municipality’s current map and rules alongside the vehicle record. EmissieCheck provides an independent indication, not an official permit or legal access decision.
Frequently asked questions
Where is the emission class on the Dutch registration certificate?
The RDW points to field V.7. Check the current vehicle record if the field is missing or appears incorrect.
Is CO₂ class 6 the same as Euro 6?
No. The CO₂ class for heavy trucks is a different classification from the Euro/emission class used for access rules.
Does a higher class always mean access?
No. Vehicle category, fuel, date, zone and exemptions also matter.
Sources
Content last checked: 15 October 2026. Rules and municipal decisions can change.