In addition to WLTP, RDE is also compulsory for all vehicle manufacturers in the EU as well as in Israel, Liechtenstein, Norway, Switzerland, Turkey and the UK since 2018. In these RDE tests, the pollutant emissions such as particulate matter and nitrogen oxides (NOx) are measured directly on the road. This method determines average emission values that can be expected during everyday driving.
In order to further reduce these pollutant values, the BMW Group employs various technologies for reducing exhaust emission in its models.
The BMW BluePerformance measures, for example, reduce the emission of nitrogen oxides in diesel engines. The BMW Group is using devices known as nitrogen oxide (NOx) storage catalytic converters in order to reduce nitrogen oxide emissions. In addition, and depending on the model, Selective Catalytic Reduction (SCR) with AdBlue® – a urea solution – converts up to 90% of the nitrogen oxides into water vapour and similarly harmless nitrogen.
The BMW Group was the first manufacturer to introduce the combination of NOx storage catalytic converter and SCR system into series production.
Since 2006, diesel vehicles have additionally been equipped with particulate filters as standard in order to reduce particulate matter. In petrol-engine models, too, special particulate filters are gradually being introduced.
In this way, the BMW Group is able to comply with the low threshold limit values of the EU6c exhaust emissions standard, which has been compulsory for all new vehicles since September 2018. The EU6c exhaust emissions standard prescribes lower particulate limits for petrol-engine vehicles compared to EU6b. The same limits apply for diesel-engine vehicles within the cycle for both EU6b and EU6c.
In order to further reduce pollutant values in everyday use, the BMW Group is applying various technologies in its models for reducing exhaust emissions.
The BMW BluePerformance measures, for example, reduce the emission of nitrogen oxides in diesel engines. With the introduction of the new 6-cylinder engine generation for the diesel as from 2020, the storage catalytic converter located close to the engine is replaced by an even more efficient SCR system, also close to the engine. As a result, NOx conversion is further improved, especially during urban driving. A second SCR catalytic converter, located as before in the underbody, provides additional support, and, depending on the vehicle, has its own AdBlue® dosing system.
The BMW Group was the first vehicle manufacturer to introduce the combination of NOx storage catalytic converter and SCR system into series production. By establishing double AdBlue® dosing, BMW is again setting new standards in the purification of exhaust gases and pollutant reduction.
Furthermore, since 2006 diesel vehicles have been equipped with particle filters as standard in order to reduce particulate matter. In the petrol-engine models, too, special particle filters re now in operation across the range.
BMW is producing EU6d vehicles from 01.10.2020 - already three months before the legally binding date of 01.01.2021. In contrast to EU6c, the EU6d exhaust emissions standard now also defines threshold limit values for the number of particles and nitrogen oxides in RDE test runs.
EU6d approval guarantees that your vehicle complies with the currently strictest EU emission limit values.