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What is RDE?

The RDE (Real Driving Emissions) test will be compulsory for all vehicle manufacturers. In these RDE tests, pollutant emissions such as particulate matter and nitrogen oxides (NOx) are measured directly on the road. The RDE test supplements the WLTP (Worldwide Harmonized Light Vehicles Test Procedure); a laboratory test that determines figures for exhaust emissions and fuel consumption. A step by step transition to WLTP and RDE will begin in September 2017.

Find out more about RDE and WLTP.

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