When used to improve fuel economy and reduce carbon emissions, rather than to
increase vehicle power and size, hybrid technology compares favorably with existing; vehicle
technology.
Already an established market in North America, Europe, and parts of Asia, HEVs are also
present in limited, but growing, numbers in developing and transitional countries. However,
as these countries join global efforts to curb pollution and greenhouse gas emissions, HEVs
are expected to be introduced on an increasing scale in the next 5 to 10 years through
enabling policies and international second hand vehicle flows.
While these technologies are still maturing, hybridization of fleets can start making a
significant dent in transport energy usage today, and can help countries meet fuel efficiency
targets by 2050. Together with systemic improvements in traffic management, the increased
use of non-motorized transport modes in more compact city centers, and higher rates of
mass transit use, HEVs are poised to contribute to long term improvements in emission
reductions.