Biofuels is the promising source of energy for future fuel requirements. Biodiesel can be developed from growing plants which naturally contains oil namely jatropha curcas, palm oil, Soybean and algae. Bioethanol can be extracted from sugar crops like sugarcane, sugar beet, maize, corn and so on by yeast fermentation. Wood items can likewise be converted into Biofuels.

The acquired Biofuels from these items contains both benefits and disadvantages.

Advantages of Biofuels:

Ecological Benefits: The main expectation of utilizing 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 automobiles. It minimizes the green house significantly compared to other fossil fuels.

First generation biofuels can save carbon emissions about 60% compared to fossil fuels whereas the 2nd generation biofuels are much better than first generation fuels. It offers carbon emission cost savings as much as 80%. Recently, UK Government publication mentioned that biofuels can minimize emissions by 50-60%. Efficiency of the engine increases by utilizing biodiesel as the lubricant.

Economical: The biofuel's rate reduces substantially if the biofuel production innovation spreads out worldwide. The biofuels are established locally which automatically boosts the rural advancement as the innovation depends generally on manual power. The quick boost of biofuel all at once increases the production of these oil crops which stimulates the agricultural market. The UK federal government has revealed that it decreases the tax for cars which are environmentally friendly. Additionally, the durability of the engine increases while using these combustible fuels in engines.

Renewability and Degradable: The biofuels are made from crops which are renewable and it is naturally degradable and more secure to deal with and less dangerous than fossil fuels.

Disadvantages of Biofuels:

Environmental Alarm: Adapting more lands for planting crops for biofuel extraction will tossed away more environments. More forests have been damaged in Asian nations for the plantation. The producing mechanism of these biodiesel undoubtedly needs nonrenewable fuel sources which produces more carbon emissions. High initial financial investment is required for the biodiesel production.

Odour: Certain biofuel crop produces heavy smell those odours are normally unwanted and biofuels plants can not be setup near the large neighborhoods.

Food and water Requirements: Some biofuel crops such as corn oil, palm oil are edible for cooking; the need for these crops for biofuels might raise the rate of these food crops. The substantial amount of water is needed for proper yield, even for drought resistant jatropha curcas plants.

Availability: The biofuels are not available in surplus so the diesel motor which are modified for biodiesel usage might deal with problems. The most cars are not equipped for utilizing biofuels in the engines. Some biodiesel can not resist frost; it gets frozen in the chillier areas. It also increases the risk of microbial growth in the engine. Only few gas stations provide this biofuels and it is difficult to carry the biofuels utilizing pipelines.

Carbon emission: Biofuels are minimizes the jatropha curcas greenhouse gases emission compared to other nonrenewable fuel sources. Recently, the European researcher reported that the burning of biodiesel specifically corn and rapeseed produces more laughing gas.