Biofuels is the appealing source of energy for future fuel needs. Biodiesel can be developed from growing plants which naturally includes oil namely Jatropha, palm oil, Soybean and algae. Bioethanol can be extracted from sugar crops like sugarcane, sugar beet, maize, corn etc by yeast fermentation. Wood items can also be transformed into Biofuels.

The obtained Biofuels from these products consists of both benefits 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 eco-friendly and pure fuels so it benefits vehicles. It decreases the green house significantly compared to other nonrenewable fuel sources.

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

Economical: The biofuel's price reduces significantly if the biofuel production technology spreads out worldwide. The biofuels are established locally which immediately boosts the rural development as the innovation depends mainly on manual power. The quick boost of biofuel concurrently increases the production of these oil crops which promotes the agricultural market. The UK federal government has revealed that it reduces the taxation for cars which are environmentally friendly. Additionally, the toughness of the engine increases while utilizing these flammable fuels in engines.

Renewability and Degradable: The biofuels are made from crops which are renewable and it is naturally degradable and safer to handle and less harmful than fossil fuels.

Disadvantages of Biofuels:

Environmental Alarm: Adapting more lands for planting crops for biofuel extraction will got rid of more environments. More forests have been damaged in Asian countries for the plantation. The producing mechanism of these biodiesel indeed requires nonrenewable fuel sources which produces more carbon emissions. High initial financial investment is needed for the biodiesel production.

Odour: Certain biofuel crop produces heavy odor those smells are normally unfavorable and biofuels plants can not be setup near the large communities.

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 big amount of water is required for correct yield, even for drought resistant jatropha curcas plants.

Availability: The biofuels are not readily available in surplus so the diesel engines which are customized for biodiesel usage might face issues. The most cars are not equipped for utilizing biofuels in the engines. Some biodiesel can not resist frost; it gets frozen in the chillier locations. It likewise increases the risk of microbial growth in the engine. Only few fuel stations use this biofuels and it is impossible to carry the biofuels using pipelines.

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