SUMMARY
In the EU there is a need to improve the energy efficiency due to the limited scope of anyother energy supplies in the short/medium term. Moreover for a sustainable development of theagrarian sector, energy save is needed. In this sector, the machinery and irrigation consumes theseventy percent of the total energy end-use. In machinery, the sixty five percent of the fuel in the farmis consumed by the tractor. The tractors energy efficiency has been labelled according to the fuelneeded to work a unit and incentives to promote the migration to more efficient tractors are given tothe farmers. The aim of the work was to characterize the farms on tractor potential energy save andefficiency. To characterize the farms a cluster analyses was developed according to the tractor age,energy label and tractor use/tillage. Primary sources as personal surveys to farms were applied. Threeclusters on potential energy save were obtained, i) Extreme energy save (42.5% of the sample), with a20-40% potential energy save, more than 10 years old tractors working in conventional and superficialtillage with D-E energy label, ii) Energy save (32.5% of the sample) with a 5-20% potential energysave, from 6 to 10 years old tractors working on superficial-conventional tillage with C energy labeland iii) Moderate energy save (25% of the sample), with an energy save less than 5%, under 5 yearsold tractors in no or shallow tillage farms and A-B energy label.