Bioethanol is a major fuel that is used as a petrol substitute for road transportation. It is produced by the sugar fermentation process and can be produced by the reaction of ethylene with steam.

Ethanol is primarily produced by the sugar sources such as fuel or energy crops. The major crops include maize, corn, wheat crops, willow, waste straw, sawdust, cord grasses, reed canary grass, sorghum plants, miscanthus, and other plants.

Ethanol is also known as ethyl alcohol. It is a clear biodegradable colorless liquid, with low toxicity, and causes significantly fewer pollution emissions.  The fuel is widely used to improve the quality of petrol, replacing lead. The blend of ethanol and gasoline is used to oxygenate the fuel to reduce pollution emissions. The widely popular blend has 10% of ethanol and 90% of petrol.

Vehicle engines need no alterations or changes for running on E10 and thus it also does not affect the warranty of the vehicle. Only vehicles with higher flexibility can run on 85% ethanol and 15% of petrol blends.

The usage of bioethanol in older vehicles helps in minimizing the carbon monoxide emissions caused by their road traction and hence enhances the air quality. Another major advantage of bioethanol is that it can easily get integrated into existing road transport fuel systems. Bioethanol can be produced by fermentation and other familiar methods; it can easily be distributed by the same petrol forecourts and transportation systems.

Bioethanol can extensively contribute to minimizing the impact of global warming and saving fossil fuels, and thus act toward the sustainable development goal. Bioethanol is an alcohol made from carbohydrates through the fermentation process. Bioethanol production from biomass or waste supports minimizing the consumption of crude oil and thus mitigating environmental pollution.

Wheat is the primary crop used for bioethanol production in Europe, it accounts for 0.7% of the agricultural land of the European Union, and 2% of the grain supply of Europe. Moreover, Brazil widely utilizes sugarcane for bioethanol production, whereas the U.S. highly relies on molasses and corn. Along with these crops, starchy materials such as rye, barley, and wheat is also extensively used for bioethanol production. 

Therefore, bioethanol is highly preferred in old vehicles to minimize pollution emissions and save fossil fuels for future generations to work on sustainable development goals.