A vehicle which is powered by an electric motor combined with an internal combustion engine. Hybrids cannot be plugged in to charge points. Combining both a motor and an engine provides significant fuel savings. One of the first and most popular hybrids has been the Toyota Prius which has proved popular with taxi drivers due to their low fuel consumption in urban areas.
These vehicles can be referred to as ‘mild hybrids’ while some manufacturers have started to use the term ‘self-charging’ to describe their hybrid vehicles. However, it’s important to note that hybrids are not classified as ultra-low emission vehicles as electrical power is generated by an internal combustion engine which itself generates harmful emissions. (see Air Quality section below).