The 24-year-old actor - who has played Sam Witwicky in all three instalments of the sci-fi action franchise - knows he will not take part in further films, but believes it will be rebooted at some point in the future.
He said: "I'm not coming back to do another one. It's still hot property, I think, especially coming out of the third one. So I imagine they'll reboot it at some point with someone else."
However, the 'Wall Street: Money Never Sleeps' is convinced the latest instalment 'Transformers: Dark of the Moon' - which saw Megan Fox replaced by Rosie Huntington-Whiteley - is the best because it has a 'Black Hawk Down' feel.
He said: "It is the best movie we've made. I'm serious. It's the best action, in terms of geography. In the second one, you get confused as to who's fighting who and where you are, because it's such a big landscape.
"This one is 'Black Hawk Down'-ish. It's one location, and the geography is simple to understand."
He added 3-D expert James Cameron - famed for his work on epic movie 'Avatar' - gave his backing to it.
He told MTV News: "Michael Bay did the 3-D in a different way than anyone has ever done it before. James Cameron has seen the movie; he's said it's the best 3-D movie since 'Avatar', so there's all that. Also this is our best story, it's the most solid screenplay we've had since we started."