Abstract
This paper concerns some researches on fuel consumption of automobiles in real urban traffic. Average speed and number of stops of the car are important factors affecting fuel consumption, and an attempt of evaluating their influence on the fuel economy is made. Good corelation is found between experiments and theory proposed. A model is found for approximation of real fuel consumption for a specific car, and information is given in establishing possible similar formulae for other cars, other manufacturers, or other traffic conditions.