The subject of this paper are measures for improvement of the energy efficiency of fleets that are in the jurisdiction of the one city in Serbia. Improvement of energy efficiency is proposed thorough following five measures: Data collection, internal benchmarking, transparency, the publication of collected information and rewarding of good practice examples; Creation of a joint fleet, joint driving and driving pairing (car sharing in public institutions); Establishment of eco-driving programs in the City Administration; Tire pressure control and The transition of a part of the petrol fleet to liquid petroleum gas. Here proposed methodology is easily understandable, characterized by transparency and easy adaptation while monitoring the results of the implementation of proposed measures is intuitive and simple.