European emission standards began to be introduced in 1992 for all new cars to improve air quality. At the time of publishing, all new cars sold in the European Union must meet the Euro 6 emission standard.

Most recently, however, the final form of the new Euro 7 emission standard is being negotiated, which should apply in the summer of 2025. What will this mean, what do the other Euro emission standards represent, and what applies to diesel and gasoline engines?