Reducing Air Pollutions with European Emission Standards (Euro-6)

The air pollution over the past decade is indeed increasingly alarming. It can have a very bad influence on our health such as respiratory disease, asthma, and other pulmonary-cardiac conditions. This situation is compounded by the increasing number of vehicles on the streets, which directly contribute to the air quality we breathe every day. The vehicles emission usually contain carbon dioxide (CO2), nitrogen oxide (NOx), carbon monoxide (CO), volatile hydrocarbon (HC), and particulate matters (PM) which worsen the air quality in our environment. Besides it has a negative impact on our health, these gases also contribute to the global warming climate change and ozone depletion in the atmosphere. Therefore, we must put an effort to reduce pollution as much as we can.

BMW owners especially 520D owners got a lot of stress lately.

Emission Standards Euro are one of the ways European government choose to reduce the air pollutions. At first, they issued a regulation requiring the use of a catalyst to gasoline engine cars which called by Euro-1 standards. Since then, five sets of standards have been established with gradually stricter regulation become Euro-2 (1996), Euro-3 (2000), Euro-4 (2005), Euro-5 (2009), Euro-6 (2014), and Euro-7 (under review).

The Euro-6 standards were introduced in September 2015. All produced cars sold from this date need to meet these emissions requirements. The maximum emission of each exhaust gas is different depending on the type of vehicles. Here is the example of required Euro-6 standards for Passenger-type diesel cars: [CO] 0.5 g/km; [NOx] 0.080 g/km; [HC+NOx] 0.170 g/km; and [PM] 0.0045 g/km. This maximum gas emission is getting tighter if we compared with Euro-5 standards. For example, in the Euro-5 standards emission, the NOx gas allowed is 0.18 g/km which means tightened by 67% in the Euro-6. The car manufacturers will use various methods to meet the emission limits. It can be through selective catalytic reduction in gasoline cars or using the exhaust gas recirculation (EGR) in the diesel cars.

Oil change a little before its limit help a lot.

If you have a plan to buy a diesel car that meet Euro-6 standards, here are the list:

  1. Audi: Audi A3 Hatchback & Sportback; Audi A3 Cabriolet; Audi A4 Saloon; Audi A6 Saloon & Avant,
  2. BMW: BMW 1 Series; BMW 2 Series; BMW 3 Series Saloon & Touring; BMW 4 Series Coupe & Convertible; BMW 4 Series Gran Coupe; BMW 5 Series; BMW X3; BMW X4; BMW X5,
  3. Citroen: Citroen C4 Cactus; Citroen DS3; Citroen DS5; Citroen C4 Picasso; Citroen Grand C4 Picasso,
  4. Mazda: Mazda 3; Mazda 6; Mazda CX-5,
  5. Mercedes: Mercedes A-Class; Mercedes CLA; Mercedes C-Class Saloon; Mercedes E-Class Saloon; Estate & Coupe; Mercedes GLA,
  6. Mini: Mini Hatchback,
  7. Peugeot: Peugeot 308; Peugeot 308 SW; Peugeot 508 & 508 SW,
  8. Vauxhall: Vauxhall Astra; Vauxhall Meriva; Vauxhall Zafira,
  9. Volkswagen: Volkswagen Golf,
  10. Volvo: Volvo S60; Volvo S80; Volvo V40; Volvo V60; Volvo V70; Volvo XC60; Volvo XC70.

If you already have a diesel car that meets the Euro-6 standard, it would be better to optimize your maintenance so the pollutions release by your engine can be more reduced. You can make a little modification in your diesel engine by installing D Clean cleaner liquid that will automatically clean your engine from dirt (carbon sludge) so the EGR valve in your engine will work better. Read more about carbon sludge here (