This pre-study is designed to determine whether EcoDriving has any negative impact on emissions and to identify what needs to be changed in the concept to minimise emissions and fuel consumption. In this pre-study, a car with measurement equipment for driving style, position (GPS) and a large number of engine parameters was used to give 16 students training in EcoDriving. A model that was specially developed for this vehicle made it possible to calculate fuel consumption and emissions. This report presents the impact of EcoDriving on fuel consumption and emissions, together with a validation of the Econen trip computer.