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UN R49 Supplement 3, Corrigendum 1 (07 series) · UNECE Regulation No. 49 (ECE R49) — Uniform provisions concerning the measures to be taken against the emission of gaseous and particulate pollutants from compression-ignition engines and positive ignition engines for use in vehicles.

UN R49 — Corrigendum 1 to Supplement 3 to the 07 series of amendments

Supplement 3 → Supplement 3, corrigendum 1

Adopted at the WP.29 198th sessionEntry into force 2026-03-11
What changed
  • Paragraphs 10.1.8a. and 10.1.10a. no longer list the OBFCM entries given in litres, l or l/h.
  • Table 1 no longer has the rows for total fuel consumed (lifetime) in l and engine fuel rate in l/h.
  • Point (k) of paragraph A.1.5.1. now refers to paragraph 10.1.8a. and paragraph 10.1.10a. of Annex 8.
Why
  • OICA said that industry stakeholders were now preparing type approval tests, and highlighted the urgent nature of the request for the industry.

Q1What changed19 changes

OBFCM data in paragraphs 10.1.8a. and 10.1.10a.

Paragraph 10.1.8a. no longer lists total fuel consumed (lifetime) in litres or engine fuel rate in l/h. Paragraph 10.1.10a. no longer lists total fuel consumed (lifetime) in litres at test start and test end, or accumulated engine fuel rate in l. In these lists, the units for total fuel consumed (lifetime) and total distance travelled (lifetime) now read “kilograms” and “kilometres” instead of “kg” and “km”. The remaining entries are numbered again, from 10.1.8a.1. to 10.1.8a.5. and from 10.1.10a.1. to 10.1.10a.7.

Total fuel consumed (lifetime) (litres)
Engine fuel rate (l/h)
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Table 1 of paragraph A.1.2.2.

Table 1 no longer has the rows for total fuel consumed (lifetime) in l and engine fuel rate in l/h. In the row for H2O concentration, “Gas analyzer” now reads “Gas analyser”.

Total fuel consumed (lifetime) l OBFCM device or ECU (if applicable) Engine fuel rate l/h OBFCM device or ECU (if applicable) Gas analyzeranalyser

Annex 10, Appendix 1: point (k) of paragraph A.1.5.1.

Point (k) now refers to paragraph 10.1.8a. of Annex 8 for instantaneous measured OBFCM values, and to paragraph 10.1.10a. for averaged and integrated OBFCM values. Before this corrigendum, it referred to paragraphs 10.1.8a.1 to 10.1.8a.7 and paragraphs 10.1.10a.1 to 10.1.10a.10 of Annex 8.

Information about instantaneous measured OBFCM values as described in paragraphs 10.1.8a.1 to 10.1.8a.7 paragraph 10.1.8a. of Annex 8, and averaged and integrated OBFCM values as described in paragraphs 10.1.10a.1 to 10.1.10a.10 paragraph 10.1.10a. of Annex 8.
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Q2Why it changed

Proposed by
OICA
Working party
GRPE, 93rd session (October 2025)

Reasons

  • The representative of OICA introduced GRPE-93-44 at GRPE. OICA said that industry stakeholders were now preparing type approval tests, and highlighted the urgent nature of the request for the industry.

    Sources (2)
    “The representative of OICA introduced GRPE-93-44.”
    “The representative of OICA added that industry stakeholders were now preparing type approvals tests, highlighting the urgent nature of the request for the industry.”

Document trail

  1. —ProposalGRPE-93-44OICA proposal to amend ECE/TRANS/WP.29/2025/94
  2. —Working party adoptsECE/TRANS/WP.29/GRPE/93GRPE adopted GRPE-93-44
  3. 2025-11Sent to WP.29ECE/TRANS/WP.29/2025/162Draft corrigendum that GRPE sent to WP.29 and AC.1
  4. 2026-03WP.29 adoptsECE/TRANS/WP.29/1190Adopted at the 198th session (session report, para. 114)
  5. 2026-03-11In forceC.N.131.2026.TREATIES-XI.B.16.49UN depositary notification

Q3Who is affected

Vehicle manufacturer

  • Check that in-service conformity reports for your engine families follow the shorter OBFCM lists in paragraphs 10.1.8a. and 10.1.10a.

Component supplier

  • No direct action for this role.

Technical service / Approval authority

  • No direct action for this role.

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

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