Biofuels is the appealing source of energy for future fuel needs. Biodiesel can be developed from growing plants which naturally includes oil particularly 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 transformed into Biofuels.

The obtained Biofuels from these products includes both advantages and drawbacks.

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 renewable and pure fuels so it benefits autos. It reduces the green house significantly compared to other fossil fuels.

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

Economical: The biofuel's cost decreases substantially if the biofuel production technology spreads out worldwide. The biofuels are developed locally which instantly boosts the rural development as the innovation depends primarily on manual power. The quick boost of biofuel all at once increases the production of these oil crops which promotes the agricultural industry. The UK government has announced that it reduces the tax for automobiles which are eco-friendly. Additionally, the durability of the engine increases while utilizing these combustible fuels in engines.

Renewability and Degradable: The biofuels are made from crops which are eco-friendly and it is eco-friendly and safer to deal with and less harmful than nonrenewable fuel sources.

Disadvantages of Biofuels:

Environmental Alarm: Adapting more lands for planting crops for biofuel extraction will discarded more environments. More forests have actually been damaged in Asian nations for the plantation. The producing system of these biodiesel undoubtedly needs fossil fuels which produces more carbon emissions. High initial investment is needed for the biodiesel production.

Odour: Certain biofuel crop produces heavy smell those smells are typically undesirable and biofuels plants can not be setup near the big neighborhoods.

Food and water Requirements: Some biofuel crops such as corn oil, palm oil are edible for cooking; the demand for these crops for biofuels may raise the cost of these food crops. The big amount of water is needed for correct yield, even for dry spell resistant Jatropha plants.

Availability: The biofuels are not offered in surplus so the diesel motor which are modified for biodiesel usage may face problems. The most autos are not equipped for utilizing biofuels in the engines. Some biodiesel can not withstand frost; it gets frozen in the colder locations. It also increases the risk of microbial growth in the engine. Only few fuel stations provide this biofuels and it is impossible to transfer the biofuels using pipelines.

Carbon emission: Biofuels are lowers the jatropha curcas greenhouse gases emission compared to other fossil fuels. Recently, the European scientist reported that the burning of biodiesel particularly corn and rapeseed produces more laughing gas.