Pros: Because it is a plant-based fuel source, it has a tremendous amount of energy output. In fact, it gives 3.2 times what it take to produce. So, it's profitable in that respect. It is also largely domestically produced in America; it has a much smaller toxin output compared to gasoline. With the different forms of Biofuel, it can reduce carbon emissions by 15-75 percent. Biodiesel has a very high lubricity rate, so it lessens the need for oil and also keeps engine running more smoothly for longer. Being that it is a plant-based liquid, it is also biodegradable, so it won't destroy the environment if spilled. It is also generally safer, it is less flamable, but is also safe to the touch and to store in relatively dangerous areas. Finally, it is also very easy to use and can be used in any regular diesel engine.
Cons: Blends over B5 are currently not approved by many automakers. Also, it has less fuel economy and also currently costs more than gasoline. The particular blend of B100 is problematic, it is not suitable for low temperatures and it also possibly has negative effects on engine durability. Lastly, there is a possibility of a nitrogen oxide increase in biodiesel.