Biofuels is the promising source of energy for future fuel requirements. Biodiesel can be developed from growing plants which naturally contains oil specifically jatropha curcas, palm oil, Soybean and algae. Bioethanol can be drawn out from sugar crops like sugarcane, sugar beet, maize, corn etc by yeast fermentation. Wood items can also be transformed into Biofuels.

The gotten Biofuels from these items consists of both benefits and disadvantages.

Advantages of Biofuels:

Ecological Benefits: The main expectation of using the biofuel is to be carbon neutral, less of CO and Sulfur, as it is made from natural deposits, and it is sustainable and pure fuels so it benefits autos. It lowers the green house considerably compared to other nonrenewable fuel sources.

First generation biofuels can conserve carbon emissions about 60% compared to fossil fuels whereas the 2nd generation biofuels are better than very first generation fuels. It uses carbon emission savings approximately 80%. Recently, UK Government publication specified that biofuels can lower emissions by 50-60%. Efficiency of the engine increases by utilizing biodiesel as the lube.

Economical: The biofuel's cost decreases considerably if the biofuel production technology spreads worldwide. The biofuels are established locally which immediately improves the rural development as the technology depends primarily on manual power. The quick boost of biofuel at the same time increases the production of these oil crops which stimulates the agricultural market. The UK government has revealed that it minimizes the taxation for automobiles which are eco-friendly. Additionally, the toughness of the engine increases while using these flammable fuels in engines.

Renewability and Degradable: The biofuels are made from crops which are sustainable and it is biodegradable and safer to handle and less harmful than nonrenewable fuel sources.

Disadvantages of Biofuels:

Environmental Alarm: Adapting more lands for planting crops for biofuel will threw away more habitats. More forests have been damaged in Asian nations for the plantation. The producing mechanism of these biodiesel undoubtedly requires nonrenewable fuel sources which produces more carbon emissions. High preliminary investment is needed for the biodiesel production.

Odour: Certain biofuel crop produces heavy odor those odours are generally unfavorable and biofuels plants can not be setup near the big communities.

Food and water Requirements: Some biofuel crops such as corn oil, palm oil are edible for cooking