摘要：The purpose of this study is to characterize the demand of hydrous ethanol fuel in the Brazilian market. This research seeks to present the developments, challenges and new market scenarios of hydrous ethanol. The theoretical part of the object design research, hydrated ethanol demand, seeking the understanding of the market of ethanol in its emergence in the country via Proalcool, as well as its rise and fall, the challenges and new scenarios from the flex fuel vehicle. The contextualization of ethanol fuel on the domestic market under as characterized the offer, its technologies and its main thrusters in the diffusion of the fuels market is not object of investigation. The work has as investigative methodology of exploratory and descriptive, explanatory, whose method is qualitative, in which research provides reflections and understanding from the understanding of hydrated ethanol fuel demand in the Brazilian market. the evidence considered in the study demonstrated through a qualitative analysis, which allowed demand conditions varied market mutation, since its emergence times up to the present time, that began with the economic pressures arising from the volatility of prices of oil barrels until the time the flex fuel technology redraws a new scenario in the market of hydrous ethanol.
