Given that there are a number of reviews out there, I shall only concentrate on 1 point which I thought is MOST important ...

To me, one of the most fascinating scene that I used to recall was: the marvellous TRANSFORMATION from CAR to ROBOT ... I was in so much anticipation of it ... nope, we are not talking abt the speed of transformation (which i believe the director or editor) might have assumed and did a good job of it ... the transformation was VERY quick (say rendered within 1 second or so) ... but hey hey hey, it was TOO quick ... such that the entire "marvel" of how different parts of a car got transformed into another portion of the robot was TOTALLY gone ... in the end, we could only be "entertained" by the overdone bombs and firefights which are ALREADY PREVALENT in many CGI films ...

In essence, the main crux of the film -- the marvel of TRANSFORMATION is lacking ... what a pity ...