In Mexico there is a wide contrast of farming activities. Much of farmland (5,574,770 ha) is cultivated by small farmers (2,243,138 holdings with < 5 ha), yet, some regions are already highly mechanised, and in other areas machinery contract services are available to farmers. To meet the demands for increased crop production it is necessary for the small farms to adopt improved technology including some mechanisation of farm operations, and for the larger farms to keep abreast of current developments in agricultural technology. In Mexico, the development of farm machinery utilisation is quite progressive, as previous government policies have greatly favoured tractors and discriminated against animal-powered methods. Still much of the land (5,885,400 ha) is tilled by a great number of working animals (3,765,774). Draught animals are the most important power source in the less fertile regions. Twenty five per cent of total power provided to agriculture comes from bovines and equines. Mexico has undertaken programs to encourage improved management and the use of animal-drawn equipment appropriate to the needs of small farmers, but the results have been disappointing. Local manufacture of promising implements was also encouraged. Although, the marketed equipment has been trailed and used with success and both technical performance and customer acceptability has been good, it did not further impress the farmer. This study shows that constraints for adopting this low-power technology exist, of which the most important are probably small farmers low purchase power and lack of reliable extension services.