For WLTP certification, the Mercedes-Benz emissions laboratory in Stuttgart conducts emission tests on roller dynamometers under standardised, reproducible test conditions. In addition, the PEMS device is validated against the dynamometer measuring equipment before each series of RDE road measurements.

Mercedes-Benz Cars - Technology and Emission Strategy - Daimler Global Media Site - For WLTP certification, the Mercedes-Benz emissions laboratory in Stuttgart conducts emission tests on roller dynamometers under standardised, reproducible test conditions. In addition, the PEMS device is validated against the dynamometer measuring equipment before each series of RDE road measurements.