The European emission standard, commonly known as Euro 4, is a set of regulations implemented by the European Union to control the emission levels of pollutants from vehicles. These standards aim to improve air quality and reduce the impact of vehicle emissions on public health and the environment.

Why was Euro 4 introduced?

Euro 4 was introduced as a successor to Euro 3, with the goal of further reducing harmful exhaust emissions from vehicles. The previous standards proved to be effective in improving air quality, and Euro 4 was developed to build upon those achievements and set more stringent limits for pollutants.

Which vehicles are covered under Euro 4?

Euro 4 applies to all new passenger cars and light commercial vehicles registered in the European Union since January 1, 2005. This standard also covers other types of vehicles such as motorcycles, mopeds, and tricycles.

What are the key requirements of Euro 4?

Euro 4 imposes stringent limits on the levels of various pollutants emitted by vehicles. The two main requirements are:

  • Reduction of nitrogen oxides (NOx) emissions by 20% compared to Euro 3 standards
  • Introduction of a mandatory particle number limit for vehicles equipped with diesel engines

What are the benefits of Euro 4?

The implementation of Euro 4 has brought several benefits to both the environment and human health:

  • Significant reduction in air pollution: Euro 4-compliant vehicles emit fewer pollutants, resulting in cleaner air and reduced smog levels.
  • Health improvements: By reducing the levels of harmful pollutants, Euro 4 helps to prevent respiratory and cardiovascular diseases caused by air pollution.
  • Promotes technological advancements: Euro 4 has stimulated the automotive industry to invest in research and development to meet the new emission standards, resulting in the introduction of cleaner and more efficient vehicles.

What is the current status of Euro 4?

Since its implementation in 2005, Euro 4 has been superseded by Euro 5 and Euro 6 standards. However, the Euro 4 regulations still apply to older vehicles in circulation. As newer and more advanced standards have been introduced, the overall emission levels from vehicles have continued to decrease.

Euro 4 is an important milestone in the European Union's efforts to combat vehicle pollution. By imposing stringent limits on pollutant emissions, Euro 4 has significantly contributed to improving air quality and protecting public health. While newer standards have been implemented, Euro 4 still plays a crucial role in regulating older vehicles and ensuring they adhere to acceptable emission levels.

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