[en] This comprehensive final report for the Swiss Federal Office of Energy (SFOE) takes a look at the background, mechanisms and prognoses for the reduction of CO₂ emissions of new cars. This report focuses on policy measures - specifically the collection of budget-neutral so-called 'feebates' - that aim to influence the behaviour of buyers of new cars as a means of enhancing energy efficiency and reducing CO₂ emissions. Both the European Union and Switzerland are pursuing a three-pillar strategy in which agreements with manufacturers and importers (pillar 1) are supplemented by the provision of more detailed information for customers in the form of energy labels for new vehicles as well as catalogues listing levels of fuel consumption (pillar 2). Pillar 3 concerns measures aimed at influencing car buying behaviour, generally based on the use of the energy label for new vehicles in order to realise the existing potentials for reducing CO₂ emissions. The report takes a look at Switzerland's car market, buying behaviour, information on efficient vehicles, acceptance factors and incentive schemes. The findings of the study are presented and commented on.