In this book, the reader learns the essential differences to the passenger car through the analysis divided according to assemblies. This gives him the tools to apply the detailed knowledge acquired to the design and development of competition vehicles. In the case of internal combustion engines, the focus is on performance-enhancing measures for racing vehicles. From the choice of the number of cylinders to the intake system to the exhaust system, the lever can be applied to every assembly. For electric drives, the traction battery, cell selection, cooling and operating strategy are considered in more detail. Energy recovery systems are an interesting enhancement for hybrid vehicles and all-electric powertrains, especially in strategic considerations for racing. Finally, gearboxes are needed independently of the drive source, albeit matched to it, so that the full potential can be exploited. The detailed, in-depth presentation makes this work just as suitable for the interested motorsport enthusiast as it is for the engineer in the field who is addressing the issues surrounding race car powertrains. The formula material is prepared in such a way that the book can also be used as a reference work.