In addition to WLTP, RDE (Real Driving Emissions) will also be compulsory for all vehicle manufacturers in the EU as well as in Switzerland, Turkey, Norway, Liechtenstein, Israel from September 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, MINI 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. MINI is using devices known as nitrogen oxide (NOx) storage catalytic convertors 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, MINI is able to comply with the low threshold limit values of the EU6c exhaust emissions standard, which is compulsory for all new vehicles as from 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.