To determine a car's impact on the environment one has to look at its whole lifespan. It ranges from the production process to the use of the vehicle to its recycling. Therefore environmentally friendly thinking already begins during production. It is essential to save energy, water, waste and emissions at this stage. In order to reduce the CO2 emissions during the utilization phase, cars are equipped with new technologies which lower fuel consumption. Finally, recycling saves resources and lowers the total CO2 balance of cars.