The automotive industry is waking up to the fact that hybrid electric vehicles could provide an answer to the everincreasing need for lowerpolluting and more fuel-efficient forms of personal transport. This is the first book to give comprehensive coverage of all aspects of the hybrid vehicle design, from its power plant and energy storage systems, to supporting chassis subsystems necessary for realising hybrid modes of operation. Key topics covered include hybrid propulsion system architectures, propulsion system sizing, electric traction system sizing and design, loss mechanisms, system simulation and vehicle certification. This book would be suitable for practicing engineers and managers involved in all aspects of hybrid vehicle development, modelling and simulation, and testing.