Proposal to amend para. 6.1.3. of Annex B10 to modify the low temperature pure electric range ratio calculation by allowing the existing PERWLTC,ave value of the representative 23°C interpolation family to be used where multiple low temperature range families belong to the same 23°C family, to avoid additional testing burden while preserving the application of a worst case approach for HVAC systems.

Proposal to amend para. 4.1. of Appendix 5 to refer to the engine-relevant control unit, amend para. 5.3. to specify that lifetime counter values may be reset only for vehicles whose engine-relevant control unit memory cannot preserve data when unpowered, and amend para. 5.4. to allow counter reset in cases of malfunctioning or engine-relevant control unit replacement. Changes reflect that OBFCM calculation is done in different control units within the vehicle, including battery management for pure electric vehicles.

Proposal to amend para. 6.1.10. to address division by zero in formulas when an OVC-HEV consumes zero fuel under charge-depleting conditions, and amend Annex B8, para. 4.2.2. to modify the charge-depleting fuel efficiency FECD calculation formula for OVC-HEVs and OVC-FCHVs under Level 1B and 3-phase WLTP testing in Level 2. The amendment applies good engineering judgement optionally to add a dash rather than zero when data input justifiably leads to division by zero.

Proposal to amend para. 6.1.10. to address division by zero cases when an OVC-HEV consumes zero fuel under charge-depleting conditions by applying good engineering judgement, and amend Annex B8, para. 4.2.2. to modify the charge-depleting fuel efficiency calculation formula for OVC-HEVs and OVC-FCHVs under Level 1B, incorporating treatment of zero fuel consumption cases. The amendments prevent invalid calculations and ensure robustness of WLTP-based methods, addressing limitations in exhaust gas analysis equipment that cause cycle “n” to contain mixed Charge Depleting and Charge Sustaining operation.

Proposal to:

• Insert new paragraphs in the introduction to clarify application to vehicles with Automated Driving Systems,
• Add definitions for ADS, ADS road load determination mode, ADS testing mode, and ADS user,
• Amend definitions of mass in running order, powered axle, reference mass, driver user-selectable mode, predominant mode, and configurable start mode to account for vehicles of categories X and Y,
• Amend the On-Board Diagnostic system definition and malfunction indicator definitions,
• Insert footnotes referencing the Consolidated Resolution on the Construction of Vehicles,
• Renumber and amend footnotes regarding Contracting Parties,
• Amend road load family and road load matrix family criteria,
• Amend tables regarding vehicle classifications,
• Amend OBD family definitions,
• Amend reagent warning and reagent inducement system provisions throughout Appendix 6,
• Amend provisions for driver user-selectable modes in Annexes A1 and B6,
• Add special provisions for vehicles of categories X and Y requiring ADS road load determination mode and ADS testing mode in Annexes B4 and B6,
• Amend provisions regarding vehicle operation and testing to reference ADS user in addition to driver,
• Amend provisions in Annexes B8, C3, C4, and C5 to accommodate vehicles equipped with ADS.

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Proposal to:

• Amend para. 3.7.1. to define rated engine power to include system power as per UN Regulation No. 177 if applicable,
• Amend para. 6.3.2.2. to add applicability scope for Level 1A only or 4-phase WLTP test only,
• Amend para. 6.3.2.3. to restructure interpolation family requirements for PEVs with applicability limited to Level 1B or 3-phase WLTP test,
• Amend Annex B1 para. 2.3.2. to exclude PEVs from Class 3 vehicle classification for Level 1B or 3-phase WLTP test,
• Amend Annex B4 para. 6.2.1. to require new vehicle selection upon each change of range and permit re-use of original measurements if vehicle is reselected,
• Amend Annex B4 para. 6.2.4. to establish two-year approval period for wind tunnel facilities with provisions for extension every two years upon manufacturer provision of modification lists and measurement results at three-month intervals,
• Amend Annex B8 para. 1.4. to define vehicle classification and add applicability scope,
• Amend Annex B8 para. 1.4.1.2. to allow use of peak power according to UN Regulation No. 177 for multiple electric machines,
• Amend Annex B8 para. 3.4.1. to add Level 1B applicability for Consecutive cycle Type 1 test procedure selection,
• Amend Annex B8 para. 4.1.2. to remove Level 1B charge-depleting CO₂ emission calculation and clarify 4-phase WLTP test applicability concerning approval of wind tunnel facilities, with reference to GRPE/2026/44.

Proposal to amend the Introduction and para. 1. to provide requirements for four levels of approval including the new Level 1C, modify para. 5.2.1. Section 2 © to include Level 1C in stage/level characters, amend para. 6.2. Table A and para. 6.3.9. to mark OBFCM as not applicable for Level 1C, modify para. 7.4.1., para. 8.1.2. Table 8/1, and para. 8.2.5.1. to exclude Level 1C from OBFCM accuracy requirements, amend para. 3.4. of Appendix 2 and Appendix 5 title to mark OBFCM accuracy and Appendix 5 as not applicable for Level 1C, modify Annexes Part A introductory text and Annex A1 heading row and Appendix 1 Part I table to accommodate Level 1C approval, amend Annex 3 Table A3/1 to add Level 1C code based on European Union, and modify Annex B6 para. 2.6.8.5. to mark OBFCM data recording as not applicable for Level 1C.

Proposal to amend Annex A1 para. 3.2.12.2.7.6.3. to clarify OBD output codes and format documentation requirements, insert new definitions for ‘confirmed fault code’, ‘cold start’, and ‘emission control components’ in para. 3.10.22. to 3.10.24., amend table titles for Tables 4A and 4B in para. 6.8.2. to clarify applicability levels and WLTP phases, amend Annex B5 para. 4.2.2.2. Table A5/1 analytical balance verification criteria, amend Annex C5 para. 3.3.3.5. and 3.3.4.(e) to clarify emission-related powertrain component monitoring requirements, amend para. 3.8.1. to specify fault code erasure conditions based on engine warm-up cycles or driving cycles, insert new para. 3.8.2. for pending fault code erasure, amend Appendix I para. 6.5.1. to clarify ‘if available’ signal usage, amend para. 6.5.3.1. to allow ISO 13400-2 and ISO 13400-4 standards as options from 1 January 2029 for non-pure electric vehicles, and amend para. 7.3.2. regarding denominator increments for temperature sensor and boost pressure control system monitors.

Proposal to amend the scope to allow type approval of vehicles of categories M<sub>1</sub>, M<sub>2</sub>, N<sub>1</sub> and N<sub>2</sub> with a reference mass not exceeding 2,840 kg as direct approvals rather than only as extensions based on approved configurations below 2,610 kg. The modification permits manufacturers to obtain type approval for vehicles within the 2,610 kg to 2,840 kg reference mass range regardless of whether lower-mass configurations of the same vehicle type are approved, addressing concerns that the previous restriction created market distortions affecting different manufacturers differently, a concern heightened by fleet electrification.

GRBP, GRE, GRPE, GRSG, GRSP, and GRVA are ready with working documents on non-ADS regulation amendments. TF AVRS is working on ADS marker lamps. UNECE published 93 amendment proposals regarding ADS fitness and ADS UNR and GTR for the 199th session of WP.29 in June 2026. UN R168.00 is tabled for the 200th session of WP.29. UN R154 former series is postponed to GRPE-95 in October 2026. Y category passive safety regulation is planned for GRSP-80 in December 2026.

Proposal to amend UN R101:

• Enable approval of vehicles equipped with Automated Driving Systems
• Introduce provisions relating to Manipulation Devices and Strategies previously in UN R83 09 series
• Clarify laboratory test requirements for pure electric range ratio at low temperature for Pure Electric Vehicles
• Allow use of actual tyre rolling resistance values in Levels 1A and 2
• Align the Regulation with current regional status and state-of-the-art

Proposal clarifies the OBFCM requirements

Proposal for change in transitional provisions to take into considerations of the lifetime value retention status

This proposal updates provisions for automated vehicles and automated driving systems.

Review of the different proposed amendments (03/04 series with different Supplements) to the regulations

Proposal clarifies the text relating to On-Board Diagnostics (OBD)