UNECE Regulation R85: Engine Power Measurement
and Technical Support by ATS Group S.r.l.

UNECE Regulation R85 establishes uniform provisions for the type approval of internal combustion and electric motors with regard to the measurement of net power and maximum torque. It is a key reference for vehicle, engine, and powertrain manufacturers, as it ensures technical data that are reliable, comparable, and internationally recognized.

What Is UNECE Regulation R85?

Regulation R85 defines:

  • Test conditions for the measurement of net power;

  • Calculation and correction methods;

  • Permitted tolerances;

  • Procedures for presenting results for type approval purposes.

It applies to:

  • Internal combustion engines;

  • Electric motors;

  • Hybrid systems;

  • M, N, L category vehicles and special purpose vehicles, depending on the scope of application.

The objective is to ensure that the power values declared by the manufacturer are reproducible, verifiable, and compliant with UNECE standards.

Why Regulation R85 Is Strategic for Manufacturers

Correct application of Regulation R85 allows manufacturers to:

  • Ensure technical transparency towards authorities and the market;

  • Avoid delays or non-compliance during the type approval process;

  • Harmonize technical data across different countries;

  • Support the international commercialization of vehicles.

Incorrect management of testing activities or documentation may result in requests for additional information, rejections, or delays in the approval process.

ATS Group S.r.l.: Your Technical Partner for UNECE Regulation R85

Choosing ATS Group S.r.l. as a Technical Service means relying on a partner with solid experience in UNECE regulations and type approval procedures.

Benefits for Manufacturers

Specialist Expertise

Highly qualified technical team with proven experience in managing R85 tests for internal combustion, electric, and hybrid engines.

Comprehensive Support

Assistance throughout all phases: preliminary analysis, test planning, documentation management, and liaison with Type Approval Authorities.

Reduced Approval Time

Structured and efficient procedures that minimize rework and requests for clarification.

Consulting Approach

ATS goes beyond testing activities, supporting manufacturers in selecting the most suitable technical solutions to ensure regulatory compliance.

Reliability and International Recognition

Technical reports issued by ATS are prepared according to the highest quality standards, facilitating recognition in international markets.

why choose ats group?

ATS Group is a group of companies operating in the field
of Inspections, Certifications and Type Approvals in the Automotive sector.

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type approval of whole vehicles

ATS Group, through its companies designated by e24 and e5 marks, is able to issue the type approval of complete vehicles.

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type approval of vechicles parts

With the type approval Approval Authority designations (E57), (E5) and (E24) ATS Group is able to carry out approvals of components, systems and technical units of vehicles in general.

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certifications

ATS Europe, as a Certification Body accredited under ISO 17021-1: 2015 as a Certification Body for Quality Management Systems under ISO 9001: 2015, has become a leading company in the field of certifications.

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testing laboratories

The test laboratories affiliated with ATS Group are ISO 17025 accredited, ensuring reliability, accuracy, and compliance with international standards.

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ats app

Our proprietary online platform can manage the whole approval process, fron the quotation till the direct download on the final Type Approval Certificate.

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competitives prices based on market analysis

ATS Group offers competitive prices and fast turnaround times, ensuring an efficient and high-quality service to meet customer needs promptly.

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