Heavy-duty Vehicles

LATEST UPDATE (September 2020)

The Euro VI-D legislation for heavy-duty engines approvals entered into force on 1 September 2018 for new types and has applied to all new engines from 1 September 2019. The Euro VI-E entered into force on 1 September 2020 for new types and will apply to all new engines from 1 September 2021. This stage includes consideration of cold-start emissions in data evaluation of the PEMS testing, as well as the measurement and evaluation of PN during the on-road test.

Particle Number (PN) measurement will be included in Euro VI Step E from the beginning for compression ignition engines. For positive ignition engines (natural gas mainly in heavy duty) the PN will need to be declared for monitoring purposes for new type approved vehicles from 01/01/2021 and will need to be complied with from 01/01/2023.


Regulation (EC) No 595/2009 of the European Parliament and of the Council of 18 June 2009 on type-approval of motor vehicles and engines with respect to emissions from heavy duty vehicles (Euro VI) and on access to vehicle repair and maintenance information


implemented by Commission Regulation (EU) No 582/2011.



Since 1992, the EU has introduced increasingly stricter limits on heavy-duty vehicle emissions through a series of ‘Euro’ standards for the approval of the engine emissions. Euro I, II and III led to improvements in engine emissions, but catalytic emission control technologies were only effectively required with the introduction of Euro IV and V in 2005 and 2008. The latest and most stringent standard currently in place is Euro VI since 01 January 2013. Since the introduction of the Euro standards, nitrogen oxides (NOx) limits for heavy-duty engines have been reduced by 95%, and those for particulates (PM) by 97%.