Alliance member companies, when testing for maximum exterior noise emissions, prefer to use the latest applicable SAE test procedures. For all light duty motor vehicles, this includes the latest standard from SAE, SAE J2805. SAE J2805 was developed in cooperation with the International Organization for Standardization (ISO) and is published as an ISO International Standard, ISO 362-1. ISO 362-1 is also the technical basis for the noise testing conducted in other markets.
The SAE J2805 and ISO 362-1 standards are developed under the principles of measuring the noise emission of vehicles under representative in-use conditions in a performance based and technically neutral manner. As such, SAE J2805 and ISO 362-1 are applicable for all vehicle technology types, including automatic transmissions, adaptive transmissions, manual transmissions, electric, hybrid, and other vehicle propulsion technologies.