The hybrid electric vehicle (HEV) market has experienced growth in 2020 despite the implications of COVID-19 on the automotive industry. However, the HEV may have a limited lifespan due to impending fossil fuel bans around the world and the greater adoption of battery electric vehicles. This report considers the trends in HEV battery and motor-generator technology in addition to historic and future markets for HEVs in five key regional markets including forecasts from 2021 to 2041.