What is a disadvantage of using hydrogen fuel instead of petrol?

Using hydrogen fuel instead of petrol has a significant disadvantage concerning the difficulties associated with hydrogen storage and transport. Hydrogen, being the lightest element, requires special conditions for storage to prevent leakage and ensure safety. It is often stored under high pressure or in liquid form, which necessitates robust and expensive tanks. These specialized storage requirements make it more complicated and costly to transport hydrogen compared to petrol, which is liquid at room temperature and does not have the same storage challenges.

In addition, infrastructure for transporting hydrogen is not as developed as that for petrol, making the logistics surrounding the use of hydrogen more complex. The existing fuel distribution networks are designed for liquid fuels like petrol and diesel, which further complicates the implementation of hydrogen as a mainstream fuel option.

This context highlights the practicality issues tied to hydrogen fuel, putting it at a disadvantage compared to the more established and manageable systems in place for petrol.