Apart from technological parameters, such as engine output, weight and aerodynamics, the human behind the wheel is the main factor influencing individual fuel consumption. Brisk, moderate acceleration, driving at a steady speed at low rpm as well as anticipatory driving and braking have a positive effect while ensuring lower fuel consumption and, therefore, reduced CO2 emissions. Other key factors with an influence on fuel consumption are heating, air conditioning, entertainment and other comfort/convenience functions. The added weight of passengers or luggage as well as low tyre pressure increase the rolling resistance and therefore the power needed to accelerate the vehicle and maintain a steady speed.
