Setting a vehicle in motion requires energy. Conventional powertrains burn fuel in order to convert heat into kinetic energy. Depending on the design of the combustion engine, the size and weight of the vehicle as well as the driver’s driving style, there is a variation in the required quantity of fuel, the energy content of which is released by combustion. There is a direct correlation between the amount of fuel burned and the arising CO₂ emissions – the higher the fuel consumption, the higher the quantity of carbon dioxide emissions. In addition, there is a direct correlation between many comfort/safety functions and fuel consumption.