October 2026 Updates: New Standards for Automotive and Road Vehicle Engineering

October 2026 marks a significant moment in the evolution of standards within Automotive and Road Vehicle Engineering. With rapid advancements in electric vehicles, automated driving, and refined emission regulations, international agencies have released five pivotal standards. These span high-pressure diesel engine components, megawatt-capable charging infrastructure, software update processes for intelligent vehicles, and frameworks for virtual testing of automated systems. Industry professionals, compliance officers, quality managers, and engineers need to understand these updates to ensure continued excellence in product innovation, safety, and regulatory compliance.

Overview / Introduction

The automotive and road vehicle sector is undergoing a technological transformation. From cleaner and more efficient propulsion systems to highly automated and connected vehicles, the pace of change necessitates robust standards that assure interoperability, safety, and quality. Standards serve as the backbone for:

• Enhancing safety and reliability across automotive systems
• Ensuring interoperability for global supply chains and evolving technologies
• Providing clarity for new engineering domains like automated driving and high-capacity electrical charging

This article presents an in-depth, accessible summary of five new international standards published in October 2026. Professionals will find actionable insights, key compliance requirements, and the practical impact of each new specification.

Detailed Standards Coverage

ISO 2974:2026 - Diesel Engines — 60° Concave Cones for High-Pressure Fuel Injection Components

Diesel engines — 60° concave cones for high-pressure fuel injection components

This tenth edition of ISO 2974 introduces critical updates for the dimensional and technical requirements of end-connections in high-pressure diesel fuel injection systems. It standardizes the specs for externally threaded 60° concave cones, central to preventing leaks and component failure in the latest generation of clean, high-efficiency diesel engines operating at pressures exceeding 2,000 bar.

Scope and Application:

• Covers fuel injectors, common rail injectors, rails, pumps, and distribution blocks
• Applicable to pipe assemblies with tube outside diameters:
  • Up to 12 mm for integral concave cones
  • Up to 9 mm for fabricated concave cones

Key requirements:

• Updated dimensional and material tolerances
• Inclusion of a new thread option (M16 × 1.0)
• Reference to the latest ISO 21920-1 for surface roughness
• Specifications tailored for ultra-high fuel pressures

Target Organizations: Diesel engine manufacturers, component suppliers, quality assurance and powertrain system integrators

Notable Changes:

• Language inclusivity improvements
• Extended dimensional tables and thread options to reflect new market needs
• Enhanced compatibility for higher pressure environments

Key highlights:

• Revised designations including new thread standards
• Compatibility with common-rail and advanced injection technologies
• Prevents leaks and premature failures at >2,000 bar pressures

Access the full standard:View ISO 2974:2026 on iTeh Standards

ISO/PAS 25090:2026 - Road Vehicles — Software Update Engineering — Vehicle Configuration Information

Road vehicles — Software update engineering — Vehicle configuration information

With the digitization of vehicle platforms, robust management of configuration data is essential for software updates at scale. ISO/PAS 25090 delivers guidance to automotive software teams on how to classify, manage, and use vehicle configuration information (VCI) during the software update lifecycle—ensuring traceability, security, and consistency across fleets.

Scope and Application:

• Defines elements and relationships for VCI
• Supports compliance with ISO 24089 (software update engineering)
• Addresses software, hardware, system, and supplemental data identifiers

Key requirements:

• Assigning immutable identifiers to vehicle and ECU components
• Documenting organizational responsibilities and audit processes
• Managing VCI across suppliers and through all phases of update engineering
• Recommendations on grouping vehicles, managing different hardware/software versions, and traceability

Target Organizations: Automotive OEMs, Tier 1 suppliers, software development teams, cybersecurity professionals

Practical Implications:

• Facilitates secure, efficient over-the-air (OTA) updates
• Reduces field errors by ensuring correct targeting and rollback
• Supports end-to-end lifecycle management for digital vehicle platforms

Key highlights:

• Organizational-level responsibilities for VCI processes
• Definitions and examples for hardware, software, and vehicle identifiers
• Supports full supply chain traceability for updates

Access the full standard:View ISO/PAS 25090:2026 on iTeh Standards

EN IEC 61851-23-3:2026 - Electric Vehicle Conductive Charging System - Part 23-3: DC Equipment for Megawatt Charging Systems

Electric vehicle conductive charging system - Part 23-3: DC electric vehicle supply equipment - Megawatt charging systems

This standard establishes requirements for megawatt-level DC charging systems, supporting high-capacity infrastructure for heavy-duty electric vehicles such as trucks and buses. EN IEC 61851-23-3 is pivotal for developing the next generation of rapid electrification infrastructure, enabling charging at unprecedented rates.

Scope and Application:

• Requirements for megawatt-class DC charging (often exceeding 1,000 kW)
• Covers safety, electrical interface, testing, and communication between charging equipment and vehicles
• Applies to infrastructure providers, equipment designers, and vehicle manufacturers

Key requirements:

• Mandatory safety features for high current and voltage environments
• Digital communication protocols for efficient energy transfer
• Thermal management integration for high-powered connectors and cables
• Over-current, short-circuit, and fault protection
• Functional performance and interoperability tests

Target Organizations: Electric vehicle OEMs, charging station manufacturers, fleet operators, infrastructure planners

Practical Implications:

• Enables ultra-fast turnaround for commercial EV fleets
• Supports safe, standardized deployment of megawatt charging at depots, logistics hubs, and public stations
• Futureproofs charging infrastructure investments

Key highlights:

• Defines operational and safety limits for megawatt-class charging
• Interoperability and communication with various vehicle types
• Advanced thermal and fault management requirements

Access the full standard:View EN IEC 61851-23-3:2026 on iTeh Standards

ISO/PAS 34506:2026 - Road Vehicles: Test Scenarios for Automated Driving Systems — Qualification of Virtual Test Environments

Road vehicles — Test scenarios for automated driving systems — Qualification of virtual test environments

With automated driving systems (ADS) on the rise, virtual simulations are now indispensable for development and safety assurance. ISO/PAS 34506 provides a comprehensive qualification framework for virtual test environments (VTEs), ensuring digital tests are credible and reliable proxies for real-world trials.

Scope and Application:

• Establishes qualification schemes for VTEs used in ADS evaluation
• Covers open-loop and closed-loop simulation configurations
• Does not cover assessment of individual simulation models or ADS systems

Key requirements:

• Documentation of VTE configuration, processes, and intended use
• Team expertise and process verification requirements
• Validation of simulation outputs against real-world data
• Qualification for synthetic test cases without real-world analogues
• Guides for MiL, SiL, HiL, and ViL simulation setups

Target Organizations: Automated vehicle manufacturers, simulation tool providers, safety and validation engineers, regulatory stakeholders

Practical Implications:

• Harmonizes VTE quality requirements across industry
• Increases regulator and consumer trust in simulation-based safety claims
• Enables scalable, cost-efficient validation of autonomous technologies

Key highlights:

• Systematic approach to VTE qualification
• Focus on real vs. virtual data correlation
• Ready applicability for scenario-based safety frameworks and global harmonization

Access the full standard:View ISO/PAS 34506:2026 on iTeh Standards

EN IEC 61851-23:2026 - Electric Vehicle Conductive Charging System - Part 23: DC Electric Vehicle Supply Equipment

Electric vehicle conductive charging system - Part 23: DC electric vehicle supply equipment

This major revision of EN IEC 61851-23 is foundational for the design and deployment of DC charging infrastructure for both passenger and commercial electric vehicles. The updated edition brings extensive technical and safety enhancements.

Scope and Application:

• Covers DC supply equipment up to 1,500 V DC and 1,000 V AC
• Applies to System A, B, and C configurations as defined in updated annexes
• Technical revision superseding the 2014 edition

Key requirements:

• Restructured to be consistent with general standards (IEC 61851-1:2017)
• Enhanced electrical safety requirements (based on IEC 62477-1)
• Robust compliance and test methods for conformity
• Expanded guidance for bidirectional power transfer (BPT) and future-proofed for advanced functions
• Addressing energy management, communication, and multi-point charging scenarios

Target Organizations: Charging infrastructure developers, automotive OEMs, grid operators, test laboratories

Notable Changes:

• Alignment with latest safety codes and international practices
• Clearer provisions for high-power and multi-side supply equipment
• Deleted obsolete annexes; added new touch current guidance (Annex HH)

Key highlights:

• Comprehensive technical update, improving safety and testability
• New annexes for advanced energy functions
• Foundation for global EV charging harmonization

Access the full standard:View EN IEC 61851-23:2026 on iTeh Standards

Industry Impact & Compliance

The October 2026 standards suite brings both technical innovation and compliance challenges. Organizations must:

• Audit and upgrade technical specifications for diesel, electric, and automated vehicle platforms
• Align supply chain processes for traceability and configuration management (especially for software updates)
• Ensure charging infrastructure interoperability and safety, capitalizing on rapid EV market growth
• Validate virtual test environments used in safety-critical ADS development

Compliance Timelines & Recommendations:

• Manufacturers must update design and validation protocols, often before regulatory deadlines
• Certification, quality management, and supply chain documentation should be updated to the new editions
• Early adoption supports faster market entry and regulatory approval

Benefits of Adoption:

• Reduces product liability risks
• Builds consumer and regulator trust
• Unlocks access to international markets
• Drives sustainable, safe, and efficient mobility infrastructure

Risks of Non-compliance:

• Market access limitations in regulated regions
• Potential for safety incidents, recalls, or costly redesigns
• Weak positioning relative to competitors embracing next-gen standards

Technical Insights

Common Technical Requirements

• Stringent dimensional and material tolerances for hardware
• Universal identifier assignment and tracking for digital vehicle platforms
• Systematic communication and safety interface requirements for charging networks
• Documented processes and expertise for simulation and test validity

Implementation Best Practices

1. Early Engagement: Involve compliance, engineering, and procurement early in specification reviews
2. Integrated Lifecycle Management: Align standards with digital development workflows (e.g., PLM, configuration management systems)
3. Training & Skills Development: Upskill teams in new requirements—especially for software update, test verification, and megawatt charging safety
4. Supply Chain Communication: Ensure that all suppliers are aware and updated on applicable standard revisions
5. Continuous Validation: Regularly audit processes and test capabilities to maintain standards conformance

Testing and Certification Considerations

• Perform type and routine testing per newly specified protocols
• Maintain documentation for test methods, digital identifiers, and configuration changes
• For virtual environments, ensure real-world scenario correlation as part of VTE qualification
• Prepare for third-party audits, especially when customer or regulatory-driven

Conclusion / Next Steps

The October 2026 publication cycle brings a comprehensive refresh to the standards landscape for Automotive and Road Vehicle Engineering. From high-pressure diesel fuel systems to the digital test environments shaping self-driving vehicles, these five standards address critical needs for safety, reliability, and technology integration in modern automotive systems.

Key takeaways:

• Stay proactive in reviewing and implementing the new requirements
• Foster collaboration across technical, quality, and supply chain teams for smooth transitions
• Integrate best practices in compliance and testing to drive competitive advantage

Organizations are encouraged to:

• Explore and acquire the full standards for detailed clause-by-clause implementation
• Subscribe to updates from authoritative sources such as iTeh Standards to stay current with ongoing evolution
• Engage with industry forums and standard bodies for early input on future revisions

Explore these and other up-to-date standards on iTeh Standards: https://standards.iteh.ai