The automotive emission test equipment market consists of devices and technologies designed to measure and analyze the emissions produced by vehicles. These tools are essential for ensuring compliance with environmental regulations by assessing levels of pollutants such as carbon monoxide (CO), hydrocarbons (HC), nitrogen oxides (NOx), and particulate matter (PM) emitted by internal combustion engines. Automotive emission test equipment is used across various applications, including vehicle manufacturing, regular vehicle inspections, and in research and development settings.