Emission standards for particle filter cars refer to regulations that limit the amount of harmful pollutants that vehicles can emit. These standards are designed to reduce air pollution and improve public health.

In the context of diesel engines, particulate filters (DPFs) are used to capture and reduce particulate matter (PM), which includes soot and other fine particles. The emission standards set maximum allowable levels of PM and other pollutants, such as nitrogen oxides (NOx), hydrocarbons, and carbon monoxide.

Different regions have varying standards, such as Euro 6 in Europe, which has specific limits for new vehicles. Cars equipped with DPFs are required to meet these standards by efficiently filtering out soot and regenerating to burn off accumulated particulates. Compliance with these standards often involves regular testing and monitoring to ensure vehicles remain within the allowed emissions limits throughout their lifespan.