Proposal to amend UN GTR No. 22 by:

• Introducing requirements for State-of-Certified Energy and State-of-Certified Range monitors,
• Setting Minimum Performance Requirements for battery durability of Pure Electric Vehicles and Off-Vehicle Charging Hybrid Electric Vehicles at 80 per cent energy retention after 5 years or 100,000 km (whichever comes first) and 70 per cent after 8 years or 160,000 km for categories 1-1 and 1-2, with lower thresholds for category 2 vehicles,
• Establishing a two-part in-use verification process comprising monitor accuracy verification and battery durability assessment,
• Introducing a Part C verification procedure for vehicles with V2X functionality or non-traction purposes to verify reported virtual distance accuracy.

Session agenda for the 100th meeting of the Electric Vehicles and the Environment Informal Working Group on 13 October 2026. The agenda covers status reports and presentations on UN GTR 22, UN GTR 21, and UN GTR 25, with discussion of Euro 7 review clause, readiness monitoring, and regulatory topics including MPRs, energy throughput, and Part C virtual distance verification.

Report on the 95th GRPE session presenting progress updates for UN GTR No. 21 (Determination of Electrified Vehicle Power), UN GTR No. 22 (In-vehicle Battery Durability for Electrified Light-Duty Vehicles), and UN GTR No. 25 (In-vehicle Battery Durability for Electrified Heavy-Duty Vehicles). The IWG on EVE reported on Phase 4 objectives and amendments for GTR 21 and 22, with consideration targets of March 2028, and Phase 3 amendments for GTR 25 with consideration target of March 2027. Future work includes investigations into charging power curves, development of a new WP.29 resolution on DC Fast Charge Power Curve performance, and an inventory on harmonization of recharging capabilities.

Status report on the EV Fast & Smart Charging cluster’s progress on two main activities: developing the Fast Charge Power Curve (FCPC), a resolution for a test procedure and KPIs, with eight open points requiring validation and verification; and developing a global roadmap on smart and bidirectional charging, which is finalised and to be published as a UN publication in Q1 2027. The cluster’s mandate has been extended for one year to October 2027 to continue validations, resolve open points, and investigate future work including review clauses and a fast charging performance test for heavy-duty vehicles.

Terms of Reference for the UNECE EV fast- & smart-charging cluster, a joint activity of WP.5 e-mobility Task Force and the IWG on EVE. The cluster aims to promote user-friendly, safe and scalable adoption of fast and smart charging functionalities of electric vehicles and their integration in the energy system. Task A develops a new WP.29 resolution on DC Fast Charge Power Curve (FCPC) of electric vehicles in three phases: Phase 1 establishes a harmonized test procedure for light duty vehicles; Phase 2 develops requirements for consumer information and minimum performance requirements; Phase 3 investigates expansion to heavy duty applications. Task B inventories the need for harmonization of other recharging capabilities and recharging documentation, including collecting existing international standards and initiatives, identifying discrepancies and gaps, and issuing a harmonized standardization/regulatory roadmap for smart and bi-directional charging of EVs by vehicle category. Chairmanship is held by The Netherlands from January 2025 to October 2027.

This document addresses open issues regarding the Fast Charge Power Curve Resolution draft still under technical discussion where no consensus has been reached by the F&SC Cluster at submission of ECE/TRANS/WP.29/GRPE/2026/52. Open points cover measurement system requirements, test vehicle conditions, test preparation, vehicle preparation phase, parameter definitions, test evaluation tolerance criteria, and data processing and calculation of KPIs including maximum charging power, average charging power in 10–80% SoE range, power curve from 10% SoE to full charge, charging duration, and recharged energy or range in 10 minutes.

Draft proposal to:

• Introduce requirements for State-of-Certified Energy and State-of-Certified Range monitors that operate for the full lifetime of vehicles,
• Set minimum performance requirements for battery durability expressed as SOCE values of 80 percent at 5 years or 100,000 km and 70 percent at 8 years or 160,000 km for categories 1-1 and 1-2, and 75 percent and 65 percent respectively for category 2 vehicles,
• Establish a two-part in-use verification process with Part A verifying monitor accuracy through statistical method on minimum 3 vehicles and Part B verifying battery durability through remote collection of on-board values from sample of at least 500 vehicles with pass decision requiring 90 percent or more of values above MPR,
• Introduce Part C verification of reported virtual distance for V2X applications with pass/fail decision based on statistical procedure with maximum 4 vehicles.

Report of the 99th session of the EVE IWG held September 8-9, 2026, covering discussions on UN GTR 21, UN GTR 22, and UN GTR 25. Topics included Japan’s proposal to revise UBE certified value calculations, China’s proposal to incorporate fuel cell vehicles under GTR 21, China’s proposals for vehicle category modifications and minimum performance requirements under GTR 25, Japan’s proposals for measurement requirements under GTR 21, assessment of alternative test methods for GTR 25, and open items across all three GTRs. The group confirmed target dates of March 2028 for GTR 21 and GTR 25 amendments.

Proposal to establish minimum performance requirements for in-vehicle battery durability of pure electric vehicles and off-vehicle charging hybrid electric vehicles, requiring manufacturers to install State-of-Certified Energy and State-of-Certified Range monitors, set minimum allowable SOCE values of 80% for categories 1-1 and 1-2 vehicles and 75% for category 2 vehicles at 5 years or 100,000 km (whichever comes first) and 70% and 65% respectively at 8 years or 160,000 km, implement a two-part in-use verification process to verify monitor accuracy and battery durability through statistical methods and remote data collection, allow manufacturers to declare higher performance requirements, and include verification of reported virtual distance for vehicles with V2X functionality or non-traction purposes.

Proposal to revise provisions and formulas in GTR 22 Annex 3, paras. 2.1.2. and 3.1.2., UN R154-04 Annex C1, Appendix 2, paras. 2.1.2. and 3.1.2., and UN R83-09 Appendix 5, para. 3.1.2. to make UBE_certified values positive and select the maximum absolute value. The document EVE-63-11e addresses concerns that when the interpolation method is applied under GTR No. 15 / UN R154, UBE_certified values become negative, contrary to regulatory intent. Revisions ensure UBE_certified is determined by selecting the maximum absolute value amongst vehicle H, vehicle L, and vehicle M where applicable.

The agenda addresses UN GTR 22, UN GTR 21, and UN GTR 25, with discussions on fuel cell vehicle proposals, open items, verification results, alternative test methods, and battery replacement provisions. A reminder notes that UN GTR 25 amendment 2 must be submitted to GRPE-96 by December 2026.

The 98th EVE IWG session held virtually on July 15, 2026, adopted the agenda and discussed Phase 4 priorities for UN GTR 22, including Minimum Performance Requirements, State of Certified Range, conditioning cycles, and mutual recognition. Japan proposed sharing Part C verification results with all Contracting Parties. The IWG reviewed UN GTR 21 and UN GTR 25 status, covering MPRs, energy throughput, virtual distance verification, and battery replacement provisions. OICA will present their MPR position at EVE 100 and share Part C verification results at EVE 99. Japan will consult on hosting 2027 meetings targeting the week of February 15th.

Technical report on the development of Amendment 2 to UN GTR No. 22. The GTR establishes a harmonized methodology for in-vehicle battery durability through battery health monitoring and minimum performance requirements. Development involved defining state of certified energy and state of certified range metrics, establishing minimum performance requirement values, creating family definitions, developing statistical procedures for on-board monitor verification, and addressing vehicle-to-grid usage through virtual distance calculations. Phase 3 revisions included defining Part C family criteria for virtual distance monitor verification, boundary conditions for verification testing, and alignment with UN Regulations 154 and 83.

UN GTR No. 22 on In-vehicle Battery Durability for Electrified Light Duty Vehicles establishes harmonized requirements for monitoring and verifying minimum battery durability performance of pure electric vehicles and off-vehicle charging hybrid electric vehicles of categories M₁ and M₂. Manufacturers must install State-of-Certified Energy (SOCE) and State-of-Certified Range (SOCR) monitors for the vehicle lifetime. Battery energy-based minimum performance requirements specify that vehicles of categories 1-1 and 1-2 must retain 80 per cent SOCE for 5 years or 100,000 km and 70 per cent for 8 years or 160,000 km; category 2 vehicles must retain 75 per cent and 65 per cent respectively. In-use verification comprises Part A verification of monitor accuracy using statistical methods, Part B verification of battery durability through remote data collection, and Part C verification of reported virtual distance. Manufacturers may declare higher performance requirements. Virtual distance may be reported for vehicles with Vehicle-to-Grid functionality or category 2 vehicles used for non-traction purposes.

The agenda for the Electric Vehicles and the Environment Informal Working Group 98th session scheduled for July 15, 2026, includes presentations on battery performance, discussions on UN GTR 21, UN GTR 22, and UN GTR 25 regulatory topics including minimum performance requirements, state of charge reference, readiness monitor and conditioning cycles, mutual recognition, fuel cell electric vehicles, highly integrated systems, energy throughput, normal usage indices, and battery replacement provisions. UN GTR 25 amendment 2 must be submitted to March 2027 GRPE with a December 2026 deadline.

This presentation summarizes EU-Commission JRC contributions to the EVE IWG regarding light-duty vehicle data for minimum performance requirements based on EVE-30-12, EVE-34-16, EVE-41-03, EVE-96-06, EVE-32-13e, EVE-74-21, and EVE-88-22. It compares JRC TEMA ageing predictions with real-world field data from multiple sources including Geotab analysis of over 22,700 electric vehicles showing average annual degradation of 2.3%, Tesla data indicating approximately 1% degradation per 40,000 km, Nissan Leaf data from Flip The Fleet comprising 2,311 vehicles, and experimental data from Canada on Tesla Model S and truck batteries. Key findings include that high-power DC fast charging causes degradation rates up to twice that of low-power charging, hot climates increase degradation 0.4% annually, and high mileage vehicles demonstrate cumulative calendar and cycle ageing effects while generally meeting GTR 22 battery energy retention requirements of 80% at five years and 100,000 km.

Proposal to add two new definitions to para. 3.30., modify para. 5.1. to require manufacturers provide a procedure for achieving recent SOCE/SOCR monitor updates, modify Annex 1 to establish monitoring based on new parameters rather than the 50 per cent state-of-charge threshold, and add mandatory values to Annex 2 including State of Certified Energy Readiness Status, Energy Storage System Recent Depth of Discharge Counter, and Preconditions for Recent Battery Capacity Update, based on GRPE/2026/5 and EVE-97-04e.

Proposal to amend para. 6.5. to specify that a verification of reported virtual distance is only required if the manufacturer requests to apply the virtual distance option, to require a test with adequate and representative vehicle use in V2X or non-traction purposes to verify accuracy of reported virtual distance increase, and to permit the verification of Part C for vehicles in the same virtual distance family to be combined between different Contracting Parties with their agreement, with such Contracting Parties considered as a single authority for verification purposes.