This book provides an in-depth exploration of E-fuels and their potential to transform the transport sector. The book covers a range of critical topics, including the chemical kinetics of E-fuels, hydrogen production methods, and the role of ammonia as a sustainable fuel. It also compares E-fuels with electric vehicles in terms of their effectiveness in reducing emissions. Additionally, the book addresses the technological advancements in hydrogen production, fuel injection techniques, and electrofuels, while highlighting the integration of power electronics for efficient fuel production. The chapters include comprehensive analyses, experimental studies, and simulation results, offering valuable insights into sustainable fuel solutions for the future of transportation. Through its wide-ranging contributions, this book serves as a valuable resource for researchers, engineers, and policymakers focused on decarbonizing the transport sector.