What drives the market for plug-in electric vehicles?

Market diffusion of plug-in electric vehicles (PEVs) is an often-addressed research topic, yet PEV market diffusion models differ in approaches, factors included and results. Here, we compare 40 market diffusion models for PEVs in scope, approach and findings to point out similarities or differences and make recommendations vor futue research in this area. We find that important input factors for the US are purchase price and operating cost, while for Germany energy prices and charging infrastructure are mentioned more often. Furthermore, larger sales shares of plug-in hybrid electric vehicles than battery electric vehicles are often found in the short term results while the picture is not so clear for the medium- to long-term. Future models should include specific PEV features like limited range of battery electric vehicles or access to charging infrastructure which are currently not covered by many models. Also, the integration of current policy regulations and, if possible, indirect policy incentives would enhance research in this field.