The emergence of biofuels worldwide, as a sustainable and future alternative to the use of fossil fuels, has generated doubts and criticisms that need to be dispelled. The technological and scientific advances of the last two decades have done much to clear up misunderstandings that are now misplaced.
Most of those who have criticized the use of biofuels such as ethanol in cars refer to their corrosive effects on parts of the vehicle, such as the fuel tanks or the pipes through which they pass. However, the new materials and configuration of the cars make this criticism misplaced: any car made in recent years is capable of running smoothly (apart from wear and tear over the years) with a mixture of up to 10-12% ethanol in gasoline.
To use a fuel with 85% ethanol in the mixture (E85), there are now cars with a specifically adapted engine. They are known in the industry as flexible fuel vehicles (FFVs).
The use of bioethanol in different countries of the world has also helped to dispel a series of myths about the "risks" of ethanol.
Bioethanol in a mixture of 85% (E85) generates an energy equivalent to that of 105 octane in a cleaner way and with better performance.
It is true that ethanol mixed with gasoline has less energy than gasoline alone, so to travel the same distance, you will always need a little more product. But the lower cost of biofuel makes any increase in fuel load profitable. In addition, if you use E85, once running, it is capable of generating the force equivalent to 105 octane fuel, so it is not only better from an environmental point of view, but also more powerful than the rest. This superior performance of ethanol used with an elevated blend is what has led to the use of E100 (100% ethanol) as fuel in such famous races as the Indianapolis 500, where the best engines in the world are found.