Electric vehicles (EVs) are clean due to their zero local emissions and low global emissions. They are also green due to their environmental friendliness, since electricity can be generated by renewable sources. Despite these obvious benefits, EVs have not been widely used around the world; the key reasons are due to their high price, short driving range or lack of charging facilities. With the growing concerns on price fluctuation, depletion of petroleum resources and global warming, there is fast growing interest on EVs in Macau. A Mitsubishi “i-MiEV” was used for experiment and evaluation, the gasoline-powered counterpart “i” will be used as baseline. In this paper, the performance of a mini-EV is evaluated specifically in sub-tropical environment of Macau.