MBA immediately after B.E. Mechanical, no experience - Suggestions?

I have completed my UG in mechanical engineering. Right now I am confused. Whether to go for work and gain experience or else to do MBA straight away.
Though I have heard that it is more likely to do MBA after a minimum of one year experience. I have heard a convincing argument from my friend that " Person doing PG soon immediately after UG will surely have the same interest to learn. Also that person will be as young as now. Rather than getting aged and having to learn in an uninterested manner" What can be done now? Looking for suggestions!!