EN   EN 
 
 
 EUROPEAN  
COMMISSION   
Brussels, XXX   
[…](2021) XXX  draft  
 
COMMISSION IMPLEMENTING REGULATION (EU) …/...  
of XXX  
implementing Regulation (EC) No 595/2009 of the European Parliament and of the 
Council as regards the performance of heavy -duty trailers with regard to their influence 
on the CO 2 emissions, fuel consumption, energy consumption and zero emission range of 
motor vehicles and amending Implementing Regulation (EU) 2020/683  
(Text with EEA relevance)   EN 1  EN COMMISSION IMPLEMENTING REGULATION (EU) …/...  
of XXX  
implementing Regulation (EC) No 595/2009 of the European Parliament and of the 
Council as regards  the performance of heavy -duty trailers with regard to their influence 
on the CO 2 emissions, fuel consumption, energy consumption and zero emission range of 
motor vehicles and amending Implementing Regulation (EU) 2020/683  
(Text with EEA relevance)  
THE EUR OPEAN COMMISSION,  
Having regard to the Treaty on the Functioning of the European Union , 
Having regard to 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 t o 
emissions from heavy duty vehicles (Euro VI) and on access to vehicle repair and 
maintenance information and amending Regulation (EC) No 715/2007 and Directive 
2007/46/EC and repealing Directives 80/1269/EEC, 2005/55/EC and 2005/78/EC1, and in 
particular  Article 5 c, first paragraph, point  (a) thereof,  
Having regard to Regulation (EU) 2018/858 of the European Parliament and of the Council of 
30 May 2018 on the approval and market surveillance of motor vehicles and their trailers, and 
of systems, components  and separate technical units intended for such vehicles, amending 
Regulations (EC) No 715/2007 and (EC) 595/2009 and repealing Directive 2007/46/EC2, and 
in particu lar Article 24(4), 36(4) , 44(5) and 45(7)  thereof,   
Whereas:  
(1) The performance of vehicles of  categories O 3 and O 4 with regard to their influence on 
CO 2 emissions, fuel consumption, electricity consumption and zero -emission driving 
ranges of motor vehicles may vary depending on the ir technical parameters. More 
efficient trailers  have lower drag fo rce resistance, th us improving the energy efficiency 
of the towing vehicle. Trailers with similar technical parameters have similar effects 
on the CO 2 emissions and fuel consumption  of the towing vehicle. In order to reflect 
the diversity of the trailer se ctor, trailers should be divided into vehicle groups with a 
similar type of vehicle, axle configuration, maximum permissible axle load and 
chassis configuration.  
(2) Commission  Regulation (EU) 2017/24003contains  certification obligations and rules 
for the dete rmination of the CO 2 emissions and the fuel consumption of heavy -duty 
motor vehicles.  The determination of the  fuel consumption is based on a computer 
                                                 
1 OJ L 188, 18.7.2009, p. 1.  
2 OJ L 151, 14.6.2018, p.1.  
3 Commission Regulation (EU) 2017/2400 of 12 December 2017 implementing Regulation (EC) No 
595/2009 of the European Parliament and of the Council as regards the determination of the CO2 
emissions and fuel consum ption of heavy -duty vehicles and amending Directive 2007/46/EC of the 
European Parliament and of the Council and Commission Regulation (EU) No 582/2011 (OJ L 349, 
29.12.2017, p. 1).  EN 2  EN simulation for which the Commission has developed the VECTO simulation tool  
pursuant to Article  5(1), point  (a), of that Regulation . Since the VECTO simulation 
tool cannot take into account the influence of different trailers  and since there is no 
software available on the market to be used for assessing the influence of trailers  on 
the energy consumption of towing vehicles , the Commission develop ed a dedicated 
trailer simulation tool for that purpose.   
(3) Aerodynamic resistance is one of the forces a vehicle must overcome while driving. It 
is scientifically proven that the use of appropriate  aerodynamic devices  on a trailer can 
significantly reduce the aerodynamic resistance of a vehicle combination  and thus its 
energy consumption . The reduction effect of those aerodynamic devices should 
therefore be certified.  
(4) Computational fluid dynamics simulation is a method to determine the aerodynamic 
drag force of a vehicle and it is less expensive than a physical test. Such  computational 
fluid dynamics simulations can only be used for aerodynamic device certification if all 
manufa cturers of aerodynamic devices  use the same 3D generic vehicle models for the 
reduction effect determination of th ose device s. In the absence of appropriate 3D 
generic  vehicle  models , the Commission has develop ed those models  and make s them 
available on a dedic ated platform free of charge.  
(5) Vehicle manufacturers should assess the environmental performance of their vehicles  
by means of a simulation tool provided by the Commission and before placing those 
vehicles  on the market in the Union. To ensure that the environme ntal performance is 
correctly simulated , approval authorities should assess and monitor the handling of 
data used for the simulation  and the proper use of the simulation tool. After th at 
assessment, the approval authority should grant a licence to th e vehicle manufacturer  
concerned for the operation of the simulation tool.  
(6) The information about  the environmental performance of a trailer can be used for road 
toll and taxation and  should  therefore  be shown in the manufacturer’s record file and 
the customer information file. To prevent forgery, vehicle manufacturers should  use a 
tool provided by the Commission to create a cryptographic hash, which should be part 
of the certificate of conformity or t he individual approval certificate. Th at 
cryptographic hash can be used to expose discrepancies between the different 
documents of the vehicle  concerned . For the same reasons, t he same hashing principle 
should apply to components and their certification.  
(7) In order to avoid unnecessary burdens for vehicle manufacturers and to reduce the 
number of annual assessments by approval authorities, technical services should be 
allowed to determine the environmental performance of vehicles that are subject to 
individua l approvals  by using the simulation tool provided by the Commission.  . The 
holder s of individual approval s should therefore be able  to request approval authorities 
to refer th ose holders  to a technical service to assess the environmental performance of 
their  vehicle s.  
(8) There are components that affect the running resistance of a vehicle very differently 
depending on th er design parameters  of those components . Manufacturers of th ose 
components should be able to certify their components by determining the  energy 
efficiency characteristics of the components themselves, using identical  methods. 
Vehicle manufacturers sh ould use th ose certified values as input data for the 
simulation tool to assess the environmental performance of vehicles. In case that a 
comp onent is not certified, vehicle manufacturers sh ould use standard values instead 
of certified values.  EN 3  EN (9) In order to limit the cost of component certification, manufacturers of components 
should be able to  group components into families. For each  family  of co mponents, the 
component  that has  the least favourable characteristics as regards the environmental 
performance of the vehicle on which it is to be installed should be tested , and its 
results should appl y to the entire family  of components . 
(10) The provisions s et out in this Regulation form part of the framework established by 
Regulation (EU) 2018/858 and complement the provisions for issuing the certificate of 
conformity and the individual approval certificate laid down in Commission 
Implementing Regulation (EU ) 2020/6834. The corresponding annexes to 
Implementing  Regulation (EU) 2020/683 should therefore be amended  to incorporate 
the necessary changes into the type -approval procedure . 
(11) The measures provided for in this Regulation are in accordance with the opini on of the 
Technical Committee  - Motor Vehicles  (TCMV) referred to in Article  83 of 
Regulation (EU) 2018/858 , 
HAS ADOPTED THIS REGULATION:  
CHAPTER  I 
SCOPE AND DEFINITIONS  
Article 1 
Scope  
This Regulation applies to vehicles of categories O 3 and O 4, other than: 
(a) vehicles with a bodywork other than a box shaped bodywork as defined in Article 2 , 
point  (2); 
(b) vehicles with a technically permissible maximum mass lower than 8 000 kg;  
(c) vehicles with more than three axles;  
(d) link drawbar trailers and link semi -trailers;  
(e) converter dollies  
(f) vehicles exceeding the  maximum authorised dimensions laid down  in Annex XIII , 
section E to Commission Implementing Regulation (EU) 2021/5355. 
Article 2 
Definitions  
                                                 
4 Commission Implementing Regulation (EU) 2020/683 of 15 April 2020 implem enting Regulation (EU) 
2018/858 of the European Parliament and of the Council with regards to the administrative 
requirements for the approval and market surveillance of motor vehicles and their trailers, and of 
systems, components and separate technical u nits intended for such vehicles  (OJ L 163, 26.5.2020, p. 
1). 
5 Commission Implementing Regulation (EU) 2021/535 of 31 March 2021 laying down rules for the 
application of Regulation (EU) 2019/2144 of the European Parliament and of the Council as regards 
uniform procedures and technical specifications for the type -approval of vehicles, and of systems, 
components and separate technical units intended for such vehicles, as regards their general 
construction characteristics and safety (OJ L 117, 6.4.2021, p. 1). EN 4  EN The following definitions shall apply:  
(1) ‘simulation tool’ means an electronic tool, developed by the Commission, which is 
used to assess the performance of vehicles of categories O 3 and O 4 with regard to 
their influence on the CO 2 emissions  and fuel consumption  of motor vehicles .; 
(2) ‘box shaped bodywork’ means an enclosed superstructure integral to the frame of the 
vehicle, which covers the goods being transported, and for which the attributed digits 
used to supplement the codes of bodywork are 03, 04, 05 , 06 or 32, in accordance 
with Annex III, Table 3 ; 
(3) ‘hashing tool’ means an electronic tool, developed by the Commission, which 
provides an unequivocal association between the certified component, separate 
technical unit or system and its certification document, or between a vehicle and its 
manufac turer's records file and its customer information file ; 
(4) ‘manufacturer’ means the person or body that is responsible to the approval authority 
for all aspects of the certification process and for ensuring conformity of CO 2 
emissions and fuel consumption rel ated properties of components, separate technical 
units and systems , irrespective of whether  that person or body is directly involved in 
all stages of the construction of the component, separate technical unit or system 
which is the subject of the certific ation ; 
(5) ‘vehicle manufacturer’ means a body or person responsible for issuing the 
manufacturer’s record file and the customer information file pursuant to Article 9;  
(6) ‘CO 2 emissions and fuel consumption related properties’ means characteristics 
specific to a component, separate technical unit and system which determine the 
impact of the part on the CO 2 emissions and fuel consumption of a vehicle;  
(7) ‘aerodynamic device ’ means a device , equipment , or a combination  thereof  in a 
specific configuration designed to reduce the aerodynamic drag of vehicle 
combinations consist ing of at least a motor vehicle and a trailer or s emi-trailer;  
(8) ‘generic  geometr y’ mean s a three dimensional model developed by the Commission 
for computational fluid dynamics simulations ; 
(9) ‘manufact urer’s records file’ means a file produced by the simulation tool which 
contains manufacturer related information, a documentation of the input data and 
input information to the simulation tool , and the  performance of the vehicle with 
regard to its  influen ce on the CO 2 emissions and fuel consumption  of motor vehicles, 
and which takes the form of the template laid down  in Annex IV , Part I ; 
(10) ‘customer information file’ means a file produced by the simulation tool which 
contains a set of vehicle related informa tion and the performance of the vehicle with 
regard to its influence on CO 2 emissions, fuel consumption, of motor vehicles,  and 
which takes the form of the template laid down in Annex IV , Part II ; 
(11) ‘input data’ means information on the CO 2 emissions and fue l consumption related 
properties of a component, separate technical unit or system which is used by the 
simulation tool to determine the CO 2 emissions and fuel consumption of a vehicle;  
(12) ‘input information’ means information about  the characteristics of a vehicle which is 
used by the simulation tool to determine the the influence on the CO 2 emissions and 
fuel consumption of th at vehicle and which is not part of input data;  
(13) ‘authorised entity’ means a national authority authorised b y a Member State to 
request relevant information from the manufacturers and vehicle manufacturers on EN 5  EN the CO 2 emissions and fuel consumption related properties of a specific component, 
specific separate technical unit or specific system and CO 2 emissions an d fuel 
consumption of new vehicles respectively . 
CHAPTER II 
VEHICLE GROUPS , ELECTRONIC TOOLS AN D VEHICLE GENERIC GE OMETRIES  
Article 3 
Vehicle groups  
Vehicle m anufactures shall classify their vehicles in vehicle groups in accordance with Annex 
I, Point 2. 
Article 4 
Electronic tools  
1. Vehicle manufacturers shall use the following electronic tools  provided by the 
Commission free of charge in the form of downloadable and executable software : 
(a) the simulation tool;  
(b) the hashing tool . 
The Commission shall maintain the electronic tools and provide modifications and updates to 
those tools.  
2. The Commission  shall make the electronic tools referred to in paragraph 1 available 
through a publicly available dedicated electronic distribution platform.  
CHAPTER II 
LICENCE TO OP ERATE THE SIMULATION  TOOL  FOR THE PURPOSES  OF TYPE -
APPROVAL  
Article 5 
Application for a licence to operate the simulation tool to assess  the performance of new 
vehicles with regard to their influence on CO 2 emissions and fuel consumption  
1. Vehicle manufacturer s shall submit to the approval authority an application for a licence 
to operate the simulation tool to assess the  performance of new vehicles with regard to their 
influence on CO 2 emissions and fuel consumption . 
2. Vehicle manufacturer s shall sub mit the  application for a licence  to operate the 
simulation tool  to the approval authority by using  the template  set out in Annex II, Appendix 
1. 
The application for a licence to op erate the simulation tool shall be accompanied by all of the 
following:  
(a) a detailed description of the processes referred to  in Annex II , Point 1; 
(b) the assessment referred to in  Annex II , Point 2. EN 6  EN 3. Vehicle manufacturer s shall submit the application for the licence to operate the 
simulation tool  at the latest together with the application for a type -approval or individual 
approval of the vehicle concerned.  
Article 6 
Administrative provisions for the granting of the licence  to operate the simulation tool  
1. The approval authority shall grant the licence to operate the simulation tool if the 
vehicle manufacturer  concerned  submits the application in accordance with Article 5 and 
proves  that all the processes have been set up in accordance with the requirements laid down 
in Annex II , Point 1. 
2. The licence shall be issued in the form of  the template  set out in Annex  II, Appendix 2.  
Article 7 
Subsequent c hanges to the processes set up for assessing the performance of new 
vehicles with regard to their influence on CO 2 emissions and fuel consumption  
1. Vehicle manufacturer s shall notify the approval authority without delay of any changes 
those manufactuers made to the processes they set up to assess the performance of new 
vehicles with regard to the influence  of those new vehicles  on CO 2 emissions and fuel 
consumption and that are covered by the licence  to operate the simulation tool , where such 
changes may have an effect on the accucary, reliability or stability of those processes . 
2. Upon receipt of the not ification referred to in paragr aph 1, the approval authority shall  
inform the vehicle manufacturer  concerned  on whether the changed processes continue to be 
covered by the licence granted  pursuant to  Article 6. 
3. Where the changes referred to in paragraph 1 are not covered by the licence  to operate 
the simulation tool , vehicle manufacturer s shall, within one month of receipt of the 
information referred to in paragraph 2, apply for a new licence  in accordance with Article 5. 
The approval authority shall withdraw the license i f a vehicle manuf acturer does not apply for  
a new licence, or if the application for a new license is rejected.  
CHAPTER III 
OPERATION OF THE SIMU LATION TOOL  
Article 8 
Obligation to assess the  performance of new vehicles with regard to their influence on 
CO 2 emissions and fuel consumption  
1. Vehicle manufacturer s shall determine the performance of new vehicles with regard to 
their influence on CO 2 emissions and fuel consumption to be sold, registered or put into 
service in the Union using the latest available v ersion of the simulation tool.  
2. Vehicle manufacturer s shall record the results of the simulation performed with the 
simulation tool  in the manufacturer's records file .  
With the exception of the cases referred to in Article 21(2), second subparagraph , and i n 
Article 23(3), any changes to the manufacturer's records file shall be prohibited.  EN 7  EN 3. Vehicle manufacturer s shall create cryptographic hashes  of the manufacturer’s records 
file and of the customer information file using the hashing tool  
4. Each vehicle to be registered, sold or to enter into service shall be accompanied by the  
customer information file . 
Each customer information file shall contain an imprint of the cryptographic hash of the 
manufacturer's records file.  
5. Each vehicle to be re gistered , sold  or enter ed into service shall be accompanied by a 
certificate of conformity  or, in the case of vehicles approved in accordance with Article 44 or 
Article 45 of Regulation (EU)  2018/858, an individual approval certificate, including an 
imprin t of the cryptographic hash of the manufacturer's records file and of the customer 
information file.  
6. By way of derogation from p aragraph s 1 to 5, vehicle manufacturers applying for 
individual approvals  for vehicles that belong to the vehicle groups concerned  may, at the 
latest together with the application for an individual approval, request the approval authority 
that the assessment of the performance of those vehicles with regard to their influence on CO 2 
emissions and fuel consumption is carried  out by a designated technical service . That request  
shall contain the input data and input information  referred to in  the template set out in Annex 
III, Appendix 1 . The vehicle manufacturer shall provide the designated technical service with 
the input data and input information of the components certified in accordance with Article 
11(1) i n the form of XML files.  
7. For the purposes of paragraph 6, the a pproval authorities shall designate a technical 
service to operate  the simulation tool and to draw up the manufacturer’s record file and the 
customer information file.   
Article 9 
Modifications  of, updates  to and malfunction ings of the simulation and hashing tool 
1. In the case of modifications or updates to the simulation tool, vehicle manufacturer s 
shall start using the modified or updated simulation tool no later than 3 months after the 
modifications and updates  have been  made available on the dedicated electronic distribution 
platform.  
2. If the performance of new vehicles with regard to their influence on CO 2 emissions 
and fuel consumption cannot be assessed due to a malfunction of the simulation tool, vehicle 
manufacturer s shall notify the Commission thereof by means of the dedicated electronic 
distribution platform  without delay . 
3. If the performance of new vehicles with regard to their influence on CO 2 emissions 
and fuel consumption  cannot be assessed  due to a malfunction of the simulation tool, vehicle 
manufacturer s shall perform the simulation for those vehicles not later than 7 calendar days 
after the dat e on which  the modifications or updates were made available on the dedicated 
electronic distribution platform . Until the modifications or updates are available , the 
obligations laid down in  Article 8  shall  be suspended for the vehicles for which the 
determ ination of  the performance with regard to their influence on CO 2 emissions and fuel 
consumption is not possible.  
Article 10 
Accessibility of the simulation tool inputs and output information  EN 8  EN 1. Vehicle manufacturer s or, in case the simulation is performed by a technical service, 
approval authorities , shall store the manufacturer's records file and the certificates on CO 2 
emissions  and fuel consumption  related properties of the components, systems and separate 
technical units for 20 years after the production or approval of the vehicle , respectively.  
2. Upon request from  an authorised entity  of a Member State  or the Commission, 
vehicle manufacturer s shall provide the manufacturer's records file   and the certificates on 
CO 2 emissions and fuel consumption related pro perties of the components, systems and 
separate technical units to that entity or to the Commission within 15 working days.  
3. Upon request from  an authorised entity or the Commission, the approval authority 
which granted the licence to operate the simulation  tool in accordance with Article 6 or which 
certified the CO 2 emissions  and fuel consumption  related properties of a component, separate 
technical unit or system in accordance with Article  17 shall provide to that entity or to the 
Commission the application for the licence to operate the simulation tool  referred to in Article 
5(2) or the application for the certification of the CO 2 emissions and fuel consumption related 
properties referred to in Article  16(2), respectively , within 15 working days.  
CHAPTER IV 
CO2 EMISSIONS AND FUEL CONSUMPTION RELATED PROPERTIES OF 
AERODYNAMIC DEVICES AND TYRES  
Article 11 
Components, separate technical units and systems relevant for assessing the  
performance of new vehicles with regard to their influence on CO 2 emissions and fuel 
consumption  
1. The input data for the simulation tool shall contain  data about  the CO 2 emissions  and 
fuel consumption related properties of the following components, separate technical units and 
systems:  
(a) aerodynamic devices ; 
(b) tyres . 
2. Vehicle  manufacturers shall base the  CO 2 emissions  and fuel consumption related 
properties of aerodynamic devic es on the values determined, for each family  of aerodynamic 
devices , in accordance with Article  13, and have th ose properties  certified in accordance with 
Article  17. In the absence of such determination and certification , vehicle manufacturer s shall 
base the CO 2 emissions and fuel consumption related properties of aerodynamic devices on 
the standard values determined in accordance with Article 12. 
3. Vehi cle manufacturers  shall base the CO 2 emissions  and fuel consumption related 
properties of tyres on the certified or standard values determined  pursuant  to Article  12 and 
Article 13  of Regulation (EU) 2017/2400.  
4. Where a new  vehicle is to be registered, sold or put into service with a complete set of 
snow tyres and a complete set of standard tyres, vehicle manufacturer s may choose which of 
the tyres to use for assessing the performance of new vehicles with regard  to their inf luence 
on CO 2 emissions and fuel consumption . EN 9  EN Article 12 
Standard values  
The standard value s for aerodynamic devices shall be determined and allocated automatically 
by the simulation tool by using the parameters laid down in Annex  V, Appendix 6. 
Article 13 
Certified values  
The certified values for aerodynamic devices shall be determined in accordance with  
Annex  V, Point 3. 
Article 14 
Vehicle generic geometries  
1. For the determination of the aerodynamic device data specified in Annex V,  
manufacturers of aerody namic devices shall use the following generic geometries:  
(a) a 4x2 tractor generic geometry;  
(b) a 4x2 tractor generic geometry for volume oriented semi -trailers;  
(c) a 4x2 rigid lorry generic geometry;  
(d) a 6x2 rigid lorry generic geometry;  
(e) a semi -trailer generic geometry;  
(f) a volume oriented semi -trailer generic geometry;  
(g) a drawbar trailer generic geometry;  
(h) a volume oriented drawbar trailer generic geometry;  
(i) a centre -axle trailer generic geometry;  
(j) a volume oriented centre -axle trailer generic geometry;  
(k) a rear flap generic geometry;  
(l) semi -trailer side covers generic geometry.  
2. The Commission shall make the generic geometries referred to in paragraph 1 available 
free of charge in the form of downloadable .igs, .step and .stl file formats through a publicly 
available ded icated electronic distribution platform.  
Article 15 
Family concept for aerodynamic devi ces using certified values  
  
1. The certified values determined for a parent aerodynamic device  shall be valid for all 
family members  of that device  in accordance with the family criteria set out in Annex V , 
Appendix 4. 
2. The CO 2 emissions  and fuel consumption related properties of the parent aerodynamic 
device shall not be better than the properties of any member of the same family  of 
areodynamic devices . EN 10  EN 3. Manufacturers of aerodynamic devices  shall provide the approval authority with 
evidence that the parent aerodynamic device fully represents the family  of aerodynamic 
devices . 
4. Upon request of a manufacturer  of an  aerodynamic device , and subject to the agreement 
of the appro val authority, the CO 2 emissions and fuel consumption related properties of the 
aerodynamic device,  other than the parent aerodynamic device , may be indicated in the 
certificate of the family  of aerodynamic devices .  
The CO 2 emissions and fuel consumption related properties of th e aerodynamic device 
referred to in the first subparagraph shall be determined in accordance with Annex V, Point 3 . 
5. Where the CO 2 emissions and fuel consumption related properties of an aerodynamic 
device,  determined in accordance with paragraph 4, lead to  a worse performance of the 
vehicle with regard to its CO 2 emissions and fuel consumption  than in the case of the parent 
aerodynamic device , manufacturer s of the aerodynamic devices concerned  shall exclude  that 
aerodynamic device   from the existing family or apply for an extension of the certification 
pursuant to Article  18. 
Article 16 
Application for a certification of the CO 2 emissions  and fuel consumption related 
properties of aerodynamic devices  and their families  
1. Manufacturer s of aerodynamic devices  shall submit to the approval authority the 
application for the certification of the CO 2 emissions  and fuel consumption related properties 
of those  device s or their respective famil ies. 
2. The application for  certification  referred to in paragraph 1  shall take the form of the 
template set out in  Annex V , Appendix 2 . 
That application  shall be accompanied by  all of the following:  
(a) an explanation of the elements of design of the aerodynamic device  which have a 
non-negligible effect on the CO 2 emissions , fuel and energy  consumption related 
properties of the aerodynamic device ; 
(b) the validation report  as specified in Annex V, Point 3 ; 
(c) the technical report  including the computer simulation results as specified in Annex 
V, Point 3 ;  
(d) a documentation package for the correct installation of  the aerodynamic device ; 
(e) a statement of compliance  issued pursuant to Annex  IV, Point 2  to 
Regulation  (EU)  2018/858.  
3. Changes to the aerodynamic device that occur after a certification  shall not invalidate 
the certification , unless its original characteristics or technical parameters are changed in a 
way that affect s the CO 2 emissions  and fuel consumption related properties of aerodynamic 
device  concerned . 
Article 17 
Certification of CO 2 emissions  and fuel consumption related properties of aerodynamic 
devices  EN 11  EN 1. If the requirement  laid down in  in Article 13  is met, approval authori ties shall certify the 
values relating to the CO 2 emissions  and fuel consumption related properties of the family of 
aerodynamic devices,  and issue a certificate in the form of the template  set out in Annex V , 
Appendix 1 . 
2. Approval authorit ies shall assign  a certification number in accordance with the 
numbering system set out in  Annex V , Appendix 3 . 
Approval authorit ies shall not assign the same certification number to another family of 
aerodynamic devices . The certification number shall be  the identifier of the technical report.  
3. Approval authorit ies shall create a cryptographic hash of the file with  the compu ter 
simulation results  referred to in Article  16(2), point  (c), and the certification number, by 
means of the hashing tool. Th at hashing shall be done immediately after the computer 
simulation results are produced. Approval authorit ies shall imprint the cr yptographic hash 
along with the certification number on the certificate on CO 2 emissions  and fuel consumption 
related properties.  
Article 18 
Extension to include a aerodynamic device  into a family  of aerodynamic devices  
1. At the request of a manufacturer  of aerody namic devices,  and upon approval of the 
approval authority  concerned , a new aerodynamic device  may be included into a family  of 
aerody namic devices  if that devices  meet s the criteria laid down  in Annex V , Appendix 4 , in 
which case  the approval au thority shall issue a revised certificate denoted by an extension 
number.  
Manufacturer s of the aerodynamic devices concerned  shall modify the information document 
referred to in Article 16(2) accordingly and provide  that document  to the approval authority.  
2. Where the CO 2 emissions and fuel consumption related properties  of the aerodyn amic 
device referred to  paragraph 1 are worse  than in the case of the parent aerody namic device , 
the new  aerodynamic device shall become the new parent aerodymanic device . 
Article 19 
Changes relevant for the certification of CO 2 emissions  and fuel consumption related 
properties of aerodynamic devices  
1. Manufacturer s of aerodynamic devices shall notify the ir approval authority of any 
changes to the design or manufacturing proce ss of  aerodynamic devices  that occur after the 
certification referred to in  Article 17 and which may have a non -negligible effect on the 
performance  with regard to CO 2 emissions and fuel consumption of the vehicle equipped with  
those devices . 
2. Upon receipt of the notification referred to in paragraph 1, the approval authorit y 
concerned  shall inform the manufacturer concerned whether or not the aerodynamic devices  
affected by the changes continue to be covered by the certificate issued, or whethe r a 
computer simulation in accordance with Article 13 is necessary.  
3. Where the aerodynamic devices  affected by the changes are not covered by the 
certificate  referred to in Article  17(1), the manufacturer  concerned  shall apply for a new  
certification or an extension  of that certification  pursuant to Article 18(1) within one month of 
receipt of that information from the approval authority . EN 12  EN Where  manufacturer s of aerodynamic devices  do not apply for a new certification or an 
revision within that deadline, or where the application is rejected, the  approval authorities 
shall withdraw the  certificate.  
CHAPTER V 
CONFORMITY OF SIMULAT ION TOOL OPERATION , INPUT INFORMATOIN A ND 
INPUT DATA  
Article 20 
Responsibilities of the vehicle manufacturer, the approval authority and the 
Commission with regard to the conformity of simulation tool operation  
1. Vehicle  manufacturer s shall take the necessary measures to ensure that the processes set 
up to assess  the performance of the vehicle with regard to its influence on the CO 2 emiss ions 
and fuel consumption  of motor vehicles  covered by the licence granted pursuant to Article 6 
continue to be adequate for that purpose.  
2. Approval authorit ies shall perform the assessment referred to in Annex II , Point 2  
annually to verify whether  the processes set up by vehicle manufacturer s for assessing the 
performance of the vehicle with regard to its influence on the CO 2 emissions and fuel 
consumption  of motor vehicles continue to be adequate  and to verify  the selection of the input 
information and input data and the repetition of the simulations performed by the vehicle 
manufacturer . 
Approval authorit ies may carry out the assessment more than once per year, but not more than 
four times a year , where they consider such assessments justified . 
Article 21 
Remedial measures for the conformity of simulation tool operation  
1. Approval authorit ies that  find, pursuant to Article 20(2), that the processes set up by the 
vehicle manufacturer to assess  the performance of the vehicle with regard to its influence on 
the CO 2 emissions and fuel consumption  of motor vehicles are not in accordance with the 
licence or may lead to an incorrect assessment of th at performance  of the vehicles concerned 
shall request th e vehicle manufacturer to submit a plan of remedial measures no later than one 
month after receipt of the request from the approval authority.  Approval authorities may 
extend the period with up to one month  where the vehicle manufacturer demonstrates that 
more  time is necessary to submit  the plan of remedial measures.  
2. Approval authorit ies shall approve or reject the plan of remedial measures  referred to in 
paragraph 1  within one month  of its receipt. Approval authorit ies shall notify the  vehicle  
manufacture r concerned  and all the other Member States of its decision.  
Approval authorit ies may require vehicle manufacturer s to issue a new manufacturer's records 
file, customer information file , individual approval certificate  and certificate of conformity on 
the basis of a new assessment of the performance of the vehicle with regard to its influence on 
the CO 2 emissions and fuel consumption  reflecting the changes implemented in accordance 
with the approved plan of remedial mea sures  referred to in paragraph 1 . 
3. The vehicle manufacturer shall be responsible for the execution of the approved plan of 
remedial measures  referred to in paragraph 1 . EN 13  EN 4. Where the plan of remedial measures  referred to in paragraph 1  has been rejected by the 
approval authority, or where the approval authority has establishe d that the remedial measures 
are not applied correctly, the approval authority shall take the necessary measures to ensure 
the conformity of simulation tool operation, or withdraw the licenc e. 
Article 22 
Responsibilities of the manufacturer  and of the  approval authority with regard to the 
conformity of CO 2 emissions  and fuel consumption related properties of the 
aerodynamic devices  
Manufacturer s of aerodynamic devices  shall take the necessary measures in accordance with 
Annex IV , Point 3  to Regulation (EU) 2018/858  to ensure that the CO 2 emissions  and fuel 
consumption related properties of the aerodynamic devices  referred to in Article 11(1), point 
(a), which have been  the subject of certification in accordance with Article  17, do not deviate 
from the certified values.  
Article 23 
Remedial measures for the conformity of CO 2 emissions  and fuel consumption related 
properties of aerodynamic devices  
1. Approval authorit ies that find, pursuant to Articles 20 and 21, that the measures taken 
by the manufacturer  to ensure th e compliance of  the aerodynamic devices , referred to in 
Article 11(1) point (a)  and c ertified  in accordance with Article 17, are not adequate, shall 
request the manufacturer of those aerodynamic devices  to submit a plan of remedial measures 
no later than one month  after receipt of the request  by that manufacturer . Approval authorities 
may extend that period with up to one month w here the manufacturer of those aerodynamic 
devices  demonstrates that more  time is necessary to submit  the plan of remedial measures.  
2. The plan of remedial measures shall apply to all the aerodynamic devices or, if 
applicable , to their respective  families , which have been identified by the approval authority 
in its request.  
3. Approval authori ties shall approve or reject the plan of remedial measures within one 
month  of its receipt. Approval authorit ies shall notify the manufacturer  of the areodynamic 
devices  and all the other Member States of its decision to approve or reject the plan of 
remedial measures.  
Approval authorit ies may require vehicle manufacturers who installed the  aerodynamic 
devices  concerned in their vehicles to issue a new manufacturer's records file, customers 
information file , individual vehicle approval certificate  and certificate of conformity on the 
basis of the CO 2 emissions  and fuel consumption related properties of those aerodynamic 
devices  obtained by means of the measures referred to in Article 22. 
4. The manufacturer s of the aerodynamic devices concerned shall be responsible for the 
execution of the approved plan of remedial measures.  
5. The manufacturer s of the aerodynamic dev ices concerned  shall keep a record of every 
aerodynamic device  recalled and repaired or modified and of the workshop which performed 
the repair. Approval authorit ies shall have access to those records on request during the 
execution of the plan of the reme dial measures and for a period of 5 years after the completion 
of its execution.  
6. An approval authority that rejects the plan of remedial measures or establishes that the 
remedial measures are not correctly applied shall take the necessary measures to ensur e the EN 14  EN conformity of CO 2 emissions  and fuel consumption related properties of the family of 
aerodynamic devices  concerned, or withdraw the certificate on CO 2 emissions  and fuel 
consumption  related properties.  
Chapter VI  
FINAL PROVISIONS  
Article 25 
Transitional provisions  
Without prejudice to Article 9(3), where the obligations referred to in Article 8 have not been 
complied with, Member States shall prohibit the registration, sale or entry into service of 
vehicles that belong to vehicle groups for w hich the first two digits are 11, 12, 13, 42, 43, 61, 
62 and 63 as from 1 January 2024 . 
Article 26 
Amendment s to Implementing Regulation (EU) 2020/683  
Annexes I, II, III  and VIII to Implementing Regulation (EU) 2020/683  are amended in 
accordance with Annex VI to this Regulation . 
Article 27 
Entry into force  and application  
This Regulation shall enter into force on the  twentieth  day following that of its publication in 
the Official Journal of the European Union . Article 8( 4) shall , however,  apply from 1 July 
2023.  
 
This Regulation shall be binding in its entirety and directly applicable in all Member States.  
Done at Brussels,  
 For the Commission  
 The President  
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