Visible crew/equipment: After escaping from Megatron, Sam and company go to a deserted junkyard. When Sam is leaning on the hood and Bumblebee drives forward and flashes his lights, a crew man can be seen in the driver's seat. This has been repeatedly corrected, wrongly, by the excuse that a few Transformers have been seen to create holographic drivers or pilots. This is not inaccurate, but cannot be plausibly applied to this case. (1) Bumblebee has never been seen to do this; in fact, no car-form Autobot has been shown to possess this ability, even in situations where it would seem sensible to do so. (2) There is nobody present who is unaware of Bumblebee's true nature, therefore he would have no reason to suddenly project one. (3) In the shots either side of this, no hologram is present. For the corrections to apply, we would have to accept that Bumblebee, for a matter of a few seconds, chose to display an ability that he's never shown to possess at any other time, in a situation where he has no reason to do so. Clearly this is not a supportable argument. This is a visible crew member and a valid mistake.
Continuity mistake: In the scene where everyone arrives in Egypt, when everyone is standing around Jetfire, there is a wide shot showing everyone and you see Mikaela sitting down wrapping Sam's hand. Then she stands up in that same shot, and it cuts to a close up that shows Mikaela sitting down again wrapping his hand. (01:27:45)
Continuity mistake: In the basement of the deli, Sam holds two photos of Seekers, one in each hand. The image of the car and plane switch hands and back again in different shots. (01:19:55)
Continuity mistake: When Alice is kissing Sam on the bed there is a fan in the window beside the Bad Boys poster. It is there when she grabs him with her 'tongue'. When Mikaela returns and throws the metal box, it just breaks glass in that window frame, and we see the fan is suddenly sitting on the bed leaning against the Bad Boys poster, to the left of the window. (00:51:45)
Factual error: When the Decepticons are reviving Megatron, General Morshower states something like "coming up from 9,000 fathoms". 9,000 fathoms is approximately 16,000 meters. The Laurentian Abyss, where it was stated in the first movie that Megatron was dropped, is around 6,000 meters deep.
Factual error: When Sam, Mikaela, Simmons and Leo are at the border crossing, the flag that is flying is that of Tajikistan, and they were supposedly transported to Egypt. Tajikistan doesn't border either Egypt or Jordan, the two countries that were mentioned. However, the insignia on the berets the soldiers were wearing match that of the Egyptian flag. (01:33:00)
Revealing mistake: After Galloway says: ''You just signed the death warrant on your career major'', we get an exterior shot of the C17 banking sharp to the right, at an angle of nearly 60 degrees. But in the following shot on the inside of the plane, everyone is still standing, and Lennox and Galloway haven't even moved. (01:39:30)
Revealing mistake: At the James S. McDonnell Space Hangar, upon finding Jetfire, Wheelie turns and says, "This guy's a legend," and then later Wheelie turns and says, "I tell you, this guy did not age well." These specific CGI frames of Wheelie are the very same frames, and only the background plates (with and without Jetfire) differ. (01:22:40 - 01:23:40)
Revealing mistake: When Sam, Mikaela, Simmons and Leo are being pursued by the police in Egypt, one of the police cars slams into a parked red car. This shot has been flipped. Note that the driver is on the right side, whereas in other shots the drivers are on the left. (01:32:10)
Continuity mistake: When Sam, Mikaela and Leo arrive at Simmons's deli, in the exterior shot the deli has a single front door with its glass covered, and bars on the store's windows. However, when Sam walks in and when Simmons tries to walk away from Sam, we see there are double front doors with a meat poster on one, and there are no bars outside of the store's window. (01:14:55 - 01:16:30)
Continuity mistake: When Mikaela deliberately rams the Saturn into the pole, in the front shot both headlights are perfectly intact after the impact, but in following shots the car's left headlight is gone. (00:54:40)
Continuity mistake: At the end, in the first aerial shot of the aircraft carrier, only a huge number '7' is imprinted on deck, but after the close-up of Mikaela and Leo there is also a huge number '4' imprinted on deck beside the '7', that is seen as Optimus and Sam stand beside one another. (02:21:25)
Continuity mistake: When Judy is crying over Sam's departure for college, Ron picks up his golf bag and carries it on his shoulder as he tells Judy to go up and pack. In the next shot, facing his back, the golf bag is gone only to reappear in the next shot as Judy goes upstairs. (00:09:40)
Continuity mistake: In one scene we're shown a Predator B UAV taking off. This is a shot of an actual Predator B, which is a pusher turboprop. In a later scene we come back to the Predator, now on site, in a CG shot. The CG model is some kind of mutant Predator with a turbojet - no prop at all. This is the same mutant CG model used in TF1, but here it is a continuity error with the real shots.
Factual error: In the battle between Decepticons and Autobots, the battle is around a Jordanian temple. Supposedly it's Petra temple, with the Egyptian pyramids only couple of miles away. In fact, the distance between the two monuments is more than 250 miles. (01:15:00 - 01:40:00)
Continuity mistake: When Mikaela's car is carried by a Decepticon helicopter, they are dropped in the building and there's a shot showing the airbags activating, but in the following shots (when the car stops moving or when they are getting out) the airbags are nowhere to be seen.
Continuity mistake: At the deli, when Sam, Mikaela and Leo are talking to Simmons, his mother shouts, "Moron, where's the white fish?" and there are four cans on the meat counter, but when it cuts to close-up there are only three. (01:16:10)
Continuity mistake: When Sam is on the cell with Mikaela, the Cube sliver falls onto the floor and Sam reaches down to pick it up with his left hand, as he holds the cell with his right hand. However in the close-up it's his right hand picking up the sliver. (00:12:10)
Continuity mistake: Just after Jetfire sacrifices himself, Ratchet orders Jolt to electrify, and we see Sam and Mikaela standing near Ratchet, but in the next shot when the Transformer's parts are flying towards Optimus, Sam is now a couple of feet away helping Mikaela stand up again.
Answer: After the tomb, he doesn't appear onscreen again. There's no indication as to what happened to him.
JAGwire