As part of WLTP certification, compliance with the limits must be verified in a so-called RDE (Real Driving Emissions) road test. For this purpose, development vehicles are equipped with a PEMS = Portable Emission Measurement System. The measurement system is on the trailer coupling or in the boot.

D548693 The diesel engine is fit for the future: Changeover to new emissions standard: new Mercedes-Benz passenger cars comply with the Euro 6d-TEMP standard as a minimum