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UN R83 Supplement 1 (08 series) · UNECE Regulation No. 83 (ECE R83) — Uniform provisions concerning the approval of vehicles with regard to the emission of pollutants according to engine fuel requirements.

UN R83 — Supplement 1 to the 08 series of amendments

Base text → Supplement 1

Adopted at the WP.29 193rd sessionEntry into force 2025-01-10
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What changed
  • Paragraphs 12.2.1. to 12.2.3. now refer to requirements for character EA, EB or EC in Table A3/1, without a list of items (a) to (e).
  • Table A3/1 has new columns “AES Flag” and “Comply with…”. The second column names requirements of UN Regulations Nos. 154, 24, 85 and 168.
  • The “Vehicle type” definition now refers to UN Regulation No. 154, and the PEMS definition refers to UN Regulation No. 168.
Why
  • The proposal aligns the vehicle type definition with the type definition of UN Regulation No. 154.
  • Some references pointed to an Annex IIIA, which the 08 series does not contain, or to paragraph 5.1.3., which is “Reserved”.
  • Informal document GRPE-90-08 says the Table A3/1 and transitional provision changes aim to give more clarity on the requirements for characters EA, EB and EC.

Q1What changed32 changes

Definition of “Vehicle type” (para. 2.1.)

Paragraph 2.1. now refers to paragraph 3.0.1. of UN Regulation No. 154 for the requirements for a vehicle type with regard to emissions. A vehicle type is a group of vehicles that fulfil these requirements. Before this supplement, paragraph 2.1. defined a vehicle type as “a group of vehicles that do not differ in the following respects:”.

"Vehicle type" means a group of vehicles that do not differ fulfil the requirements for a vehicle type with regard to emissions in the following respects:accordance with paragraph 3.0.1. of UN Regulation No. 154.

Definition of PEMS (para. 2.37.)

The definition of “Portable emissions measurement system” (PEMS) now refers to the requirements in Annex 4 of UN Regulation No. 168. Before this supplement, it referred to the requirements in Appendix 1 to Annex IIIA.

"Portable emissions measurement system " (PEMS)" ) means a portable emissions measurement system meeting the requirements specified in Appendix 1 to Annex IIIA4 of UN Regulation No. 168.

Utility factor values for emission characters (para. 3.4.10.)

Paragraph 3.4.10. now refers to Table A8.App5/1 of Appendix 5 to Annex B8 to UN Regulation No. 154 for the utility factor values. Before this supplement, it referred to Table A8.App5/1 of paragraph 3.2. of Annex B8. The rest of the paragraph does not change.

Vehicles of category M1 or N1 shall be approved with emission characters EA, EB or EC as specified in Table A3/1, Annex 3, taking into account the utility factors determined in accordance with the values specified in Table A8.App5/1 of paragraph 3.2. of Appendix 5 to Annex B8 to UN Regulation No. 154.

Extensions of approval (paras. 7.1. and 7.2.2.2.)

Paragraph 7.1. now reads “Extensions for idling emissions (Type 2 test)”. Before this supplement, it said “tailpipe emissions”. In paragraph 7.2.2.2., the proportion (E) is now (E) = |(V2 – V1)|/V1, with the absolute value of (V2 – V1). Before this supplement, the formula was (E) = (V2 – V1)/V1.

Extensions for tailpipe idling emissions (Type 2 test)
(E) = (|(V2 – V1)/)|/V1

Type approvals for characters EA, EB and EC (paras. 12.2.1. to 12.2.3.)

For approval of new types of vehicle, paragraphs 12.2.1. to 12.2.3. now refer to the requirements for character EA, EB or EC in Table A3/1. The dates do not change: 1 September 2023 for EA, 1 January 2025 for EB and 1 January 2027 for EC. Before this supplement, each of these paragraphs ended with “comply with:” and items (a) to (e). Items (b) to (e) named Part III of UN Regulation No. 24 (if applicable), UN Regulations Nos. 85 and 154, and “UN Regulation No. [xxx] on RDE”.

As from 1 September 2023, Contracting Parties applying this Regulation shall grant an approval to new types of vehicle only if they comply with: the requirements for vehicles approved under the character EA as defined in Table A3/1, Annex 3 of this Regulation, as amended by the 08 series of amendments.
As from 1 January 2025, Contracting Parties applying this Regulation shall grant an approval to new types of vehicle only if they comply with: the requirements for vehicles approved under the character EB as defined in Table A3/1, Annex 3 of this Regulation, as amended by the 08 series of amendments.
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New columns in Table A3/1 (Annex 3)

Table A3/1 has two new columns, “AES Flag” and “Comply with…”. Key (1) refers to paragraph 3.4.2. for the AES Flag. Under “Comply with…”, the UN Regulation No. 154 entries name the Level 1A requirements of the 02 series of amendments or 03 series of amendments. These entries take into account the utility factor based on dnea for EA, dneb for EB and dnec for EC, with Table A8.App5/1 values. The “Others” entries name Part III of UN Regulation No. 24 (if applicable), UN Regulation No. 85 and UN Regulation No. 168 on RDE. Key (3) says that UN Regulation No. 168 on RDE is not applicable for vehicles of category N2.

M1, M2, N1, N2 OBD thresholds (see Table 4A in paragraph 6.8. of UN Regulation No. 154) M1, M2, N1, N2 PI, CI M1, M2, N1, N2 PI, CI AES Flag(1) Comply with… UN Regulation No. 154: Others: M1, M2 N1, N2(3) No OBD thresholds(2) Level 1A requirements of the 02 series of amendments or 03 series of amendments taking into account the utility factor based on dnea determined in accordance with the values specified in Table A8.App5/1 of Appendix 5 to Annex B8 to UN Regulation No. 154 The requirements stated in Part III of UN Regulation No. 24 (if applicable) The requirements of UN Regulation No. 85 The requirements of UN Regulation No. 168 on RDE Yes Level 1A requirements of the 02 series of amendments or 03 series of amendments taking into account the utility factor based on dneb determined in accordance with the values specified in Table A8.App5/1 of Appendix 5 to Annex B8 to UN Regulation No. 154 Level 1A requirements of the 02 series of amendments or 03 series of amendments taking into account the utility factor based on dnec determined in accordance with the values specified in Table A8.App5/1 of Appendix 5 to Annex B8 to UN Regulation No. 154(4)
Key:
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References and wording in Appendix 3a to Annex 1

In Appendix 3a to Annex 1, paragraph (a) and item (i) of paragraph (d) now refer to paragraph 5.1.7. instead of paragraph 5.1.3. These references concern the exceptions to the defeat device prohibition. Paragraph (f) now has a closing bracket after “lowest practical level”. In Table A1/1, the “Versioning table” entry now reads “Content of each version modifications and which part is modified”.

a declaration of the manufacturer that the vehicle does not contain any defeat device not covered by one of the exceptions in paragraph 5.1.35.1.7. of this Regulation;
why any of the exception clauses from the defeat device prohibition in paragraph 5.1.35.1.7. of this Regulation apply;
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Q2Why it changed

Proposed by
Experts from the International Organization of Motor Vehicle Manufacturers (OICA)
Working party
GRPE, 90th session (January 2024)

Reasons

  • Under the definition in the 08 series, vehicles of one UN Regulation No. 154 “Vehicle type with regard to emissions” could fail to be covered by a single type-approval. For this reason, the proposal aligns the definition with the type definition of UN Regulation No. 154.

    Sources (2)
    “could lead to the case that vehicles which fall within a single “Vehicle type with regard to emissions” in accordance with UN Regulation No. 154 would not fulfil the requirements to be covered by a single type-approval”
    “Therefor it is proposed to align the vehicle type definition of the 08 series of amendments to UN Regulation No. 83 to the type definition of UN Regulation No. 154.”

  • The PEMS definition referred to Appendix 1 to Annex IIIA, but the 08 series does not contain an Annex IIIA. The definition came unchanged from Commission Regulation (EU) 2017/1151 as amended by 2018/1832, where Appendix 1 to Annex IIIA has the headline “Test procedure for vehicle emissions testing with a Portable Emissions Measurement System (PEMS)”. Annex 4 to the new UN Regulation No. 168 on RDE includes the chapter with the same headline.

    Sources (3)
    “However, UN Regulation No. 83 in its 08 series of amendments does not contain an Annex IIIA.”
    “The definition got carried over unchanged from COMMISSION REGULATION (EU) 2017/1151 as amended by 2018/1832”
    “The chapter with the same headline is included within Annex 4 to the new UN Regulation No. 168 on RDE.”

  • The reference to paragraph 3.2. of Annex B8 to UN Regulation No. 154 was wrong. The values for the utility factor calculation are in Table A8.App5/1 of Appendix 5 to Annex B8. Paragraph (a) and item (i) of paragraph (d) to Appendix 3a of Annex 1 referred to paragraph 5.1.3., which is “Reserved”. Paragraph 5.1.7. contains the same content and requirements as Article 5(2) of Regulation (EC) No 715/2007.

    Sources (3)
    “Correction of a wrong reference to paragraph 3.2. of Annex B8 to UN Regulation No. 154.”
    “However, the content of paragraph 5.1.3. is “Reserved”.”
    “The same content and requirements of Article 5(2) of Regulation (EC) No 715/2007 are contained within 5.1.7. of the 08 series of amendments to UN Regulation No. 83.”

  • Paragraph 7.1. referred to “tailpipe emissions” and to the Type 2 test, but the Type 2 test gives the procedure to determine idling emissions. The formula in paragraph 7.2.2.2. came from the 07 series of amendments. In the 07 series, the numerator is the absolute value of (V2 – V1), which fits better to the prescribed tolerances of (E).

    Sources (2)
    “The Type 2 test however provides the procedure to determine idling emissions as it is also described within paragraph 1. of the regulation.”
    “however within the 07 series of amendments the absolute value of (V2 – V1) is used as the numerator which fits better to the prescribed tolerances of (E).”

  • Proposer's reason (informal document GRPE-90-08)

    The changes to Table A3/1 and the transitional provisions aim to give more clarity on the requirements for emission characters EA, EB and EC.

    Submitted by Experts from OICA. Working party adoption: ECE/TRANS/WP.29/GRPE/90, para. 18.

    Source
    “The changes proposed to UN Regulation No. 83 as amended by the 08 series of amendments with this document aim to provide more clarity regarding the requirements connected to the different emissions characters EA, EB and EC”

Document trail

  1. 2022-10ProposalECE/TRANS/WP.29/GRPE/2023/2European Commission proposal for a new 08 series, which GRPE-89-15 proposed to amend
  2. —ProposalGRPE-89-15Informal OICA proposal that GRPE/2024/8 is based on
  3. 2023-10RevisedECE/TRANS/WP.29/GRPE/2024/8Proposal by the OICA experts for the 90th GRPE session
  4. —Amended in sessionGRPE-90-08Amendments by OICA experts to GRPE/2024/8
  5. —Working party adoptsECE/TRANS/WP.29/GRPE/90Session report, para. 18 and Annex VII
  6. 2024-04Sent to WP.29ECE/TRANS/WP.29/2024/50Text that GRPE sent to WP.29 and AC.1
  7. 2024-06WP.29 adoptsECE/TRANS/WP.29/1179Adopted at the 193rd session (session report, para. 162)
  8. 2025-01-10In forceC.N.50.2025.TREATIES-XI.B.16.83UN depositary notification

Q3Who is affected

Vehicle manufacturer

  • Check your vehicle types against “the requirements for a vehicle type with regard to emissions” in paragraph 3.0.1. of UN Regulation No. 154.
  • For new vehicle types, meet Table A3/1 requirements of the character that paragraphs 12.2.1. to 12.2.3. set for each date.
  • For “Level 1A requirements of the 02 series of amendments or 03 series of amendments”, use the utility factor based on dnea (EA), dneb (EB) or dnec (EC), with Table A8.App5/1 values.
  • Meet the requirements of UN Regulation No. 168 on RDE that Table A3/1 lists, except for vehicles of category N2.
  • Check any PEMS that you use against the requirements in Annex 4 of UN Regulation No. 168 (paragraph 2.37.).
  • In your declaration and documents on defeat device exceptions, refer to paragraph 5.1.7. instead of paragraph 5.1.3.

Component supplier

  • No direct action for this role.

Technical service / Approval authority

  • Check that vehicles in one type fulfil “the requirements for a vehicle type with regard to emissions” of UN Regulation No. 154, paragraph 3.0.1.
  • Check new vehicle types against the Table A3/1 character that paragraphs 12.2.1. to 12.2.3. set for each date.
  • Check compliance with UN Regulation No. 168 on RDE as Table A3/1 lists it, except for vehicles of category N2.
  • For extensions of approval, check that the calculation uses (E) = |(V2 – V1)|/V1.
  • Check that the PEMS meets the requirements in Annex 4 of UN Regulation No. 168 (paragraph 2.37.).
  • Check that manufacturer declarations and documents on defeat device exceptions refer to paragraph 5.1.7., not paragraph 5.1.3.

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ⓘ This report gives advice only. It is not legal or type-approval advice.

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