In Europe, there have been emissions regulations for passenger cars since 1970. However, the first standard regulations brought into effect across the EU and UK were first introduced in 1992. Known as Euro 1, these Euro emissions standards were imposed on new cars by the European Union in order to cut-down exhaust pollutants to improve the quality of air for the environment and for the health of citizens. From 1992 to today, vehicles with combustion engines have had to pass through various stages of increasingly stringent limits designed to reduced harmful emissions.
To date, there have been 6 standards, with the latest Euro 6 applying to all new cars from September 2015, and to new type approvals from September 2014 – that is, the confirmed production samples that meet specified performance standards.
To understand the impact of the Euro emission standards, just remember the Euro 6 has seen a massive 96% reduction for some pollutants since the Euro 1. It has undoubtedly made cars a lot more environmentally friendly.