With the economic and societal progress, a great escalation in energy demands has been witnessed over the years. A major proportion of total energy consumed globally is accounted by the transportation sector where fossil fuels or derivatives such as petrol, diesel and jet fuel are predominantly utilized. This has led to a very high contribution to greenhouse emissions by this sector. With focus on a sustainable future, there is a dire need for alternate green fuels. In this short review, we discuss the potential use of ammonia as a clean fuel; disadvantages and possible resolutions.