Traditionally, fuel consumption and emissions of a car (carbon dioxide and pollutant emissions such as nitrogen oxides) were determined by applying a standardized driving cycle in a test laboratory. In Europe the applicable cycle was called the “New European Drive Cycle” (NEDC). This has changed in the meantime: Now, emissions are measured against the much more realistic “Worldwide harmonized Light duty vehicle Test Cycle” (WLTC). In addition to the WLTC, vehicles get driven in real traffic, to verify the match between “Real Driving Emissions” (RDE) measured on the road and the WLTC results. To do that, vehicles get equipped with mobile measuring systems delivering solid data on the actual emission levels of a car. Deviations between cycle results and real-world driving shall thus be eliminated, the rationale being that – the ever stricter – emissions limits defined by legislation have to be observed to actually protect the environment. The real challenge of this RDE approach lies in ensuring that the clean operation of a car is ensured during all operating conditions – also including, e.g., cold starting. Vitesco Technologies is delivering know-how and innovative key products to ensure the emission safety expected from today’s and tomorrow’s conventional cars and hybrid cars.