Electric vehicle sales data is collected on a model-by-model basis from automotive associations, OEMs and trade data at a country level for both BEV and PHEV vehicles for major markets. This analysis covers a minimum of 95% of total global market sales and provides a balanced representation of markets with different vehicle characteristics, suppliers and seasonality. EV charge point data is collected by country from government sources where possible, with calculations applied depending on the EV charging technology.

Where EV specific model data is not explicitly stated, estimates are used based on industry and company reports and primary research. These are then corroborated or adjusted when official data becomes available. For each vehicle model we collect data relating to maximum AC and DC charging capability, plug type(s), battery pack size and battery chemistry in addition to a number of other vehicle metrics.