This report presents and analyses policies, programmes and approaches for the development, market introduction and diffusion of green cars. It reviews government policies in a number of OECD countries as well as a selection of non-OECD economies. The report attempts to provide: i) a better understanding of the growing market for green vehicles; ii) new analytical instruments to identify policies and approaches that could be designed and put in place, notably with the aim of fostering the uptake of green cars; and iii) to the extent possible, insights into the efficiency and effectiveness of existing policies, as well as guidance on how to assess the impact of future measures.