Continuity mistake: When Sam's parents first show up, we see a shot of their RV with a car parked behind it, on the pavement. When they go to use this car to take him to his interviews it is now on a trailer behind the RV.
Other mistake: When the Autobots return during the fight they say they were hidden in the first booster rocket to break off. When their rocket exploded the first boost rocket hadn't broken off yet.
Continuity mistake: In the scene where Wang is pushed out the window by Laserbeak, when he lands you hear a car siren. In the shot prior of him falling, there are no cars on the ground below him. (00:43:40)
Continuity mistake: When Sideswipe kicks the gun towards Ironhide, the latter one catches, turns, locks, aims and holds the gun still all in the same motion. The nest shot has him do the same again, only this time he keeps on turning.
Continuity mistake: When Optimus dives in front of Shockwave, there is all sorts of rubble around the latter one. In the shot of the bullet arriving at the cupola, all of the rubble, damage to the street and broken cars are gone.
Revealing mistake: When Bumblebee skids out of control after dodging the truck with the barrels in it, you can see skidmarks of a previous attempt. Same place, same direction. (01:08:15)
Continuity mistake: Just before the soldiers jump out of the Osprey, there is a shot of them running for the exit. You can see a very big gun on the soldier's chest. But in every shot of them wingsuiting through Chicago, none of the soldiers can be seen carrying any kind of weapons, let alone big LMG's and assault rifles which they use after landing.
Continuity mistake: After Sam and Carly are reunited, her hand keep altering from being very dirty and in Sam's face, and clean in Sam's neck.
Revealing mistake: During the highway chase scenes there are two "out of sync" animation sequences of the Decepticons in action. 1) In the front view with all the cars facing the camera, the Decepticon robot on the right shoves the car sideways (to the right), however, the car flies into the air a second later and in the opposite direction. 2) The scene cuts to the side view of the Decepticon and you see him motioning to pick up a car and begin to toss it in the air. However, when he does this, his hand is empty and the car just flies just below him.
Continuity mistake: At the beginning, when Sam receives the medal , his hairstyle (parting) alters .
Continuity mistake: When Sam is getting swung around by the decepticon, Lennox helps him and cuts the line. They fall past the height of the building (out of shot) then you seen Bumblebee coming to help them, and they're back above the building with the decepticon but in that time they would've hit the ground before Bumblebee could grab them. (01:58:00)
Revealing mistake: Megatron's foot (tyre) clips through the bottom of Lincoln's chair.
Visible crew/equipment: The camera crane is visible reflected in the glass when the army dudes are prepping a rocket launcher. This is the scene before everyone is sliding down the building.
Continuity mistake: When Sam and Jerry Wang are in the elevator, just after the other co-workers leave, Jerry takes a drink from his milk carton, placing the straw in his mouth, from the top of the straw, down to the hinge section. The shot cuts and there is suddenly less of the straw in his mouth. (00:40:00)
Continuity mistake: When the Decepticon jumps into the leaning building, Carly ducks in panic. When the shot cuts, she is standing straight up again, very calm at that.
Factual error: In the first scene inside the New Mexico VLA Radiofrequency Observatory, dated as 1961, the camera pans over to what looks like a high-definition radar display screen. High definition resolution did not exist in the 60s. (00:02:18)
Continuity mistake: When the soldiers are wingsuiting into Chicago, they fly past Trump Tower multiple times.
Continuity mistake: When Starscream flies in to destroy the Ospreys with Lennox and his team, you can see that the streets below are pretty badly damaged. When the soldiers jump, there are a few shots from a helmet cam from one of the soldiers and the streets are completely intact.
Continuity mistake: When The Xantium leaves earth, it leaves a massive trail of smoke. When Sam calls Dylan, the smoke is gone only to reappear after Starscream blew the Xantium up.
Continuity mistake: During the Mexican Standoff, Ironhide finally forces the spike into the face of one of the Dreads and lifts him up by it. Pay attention to the red car underneath: when Ironhide smashes the Decepticon's face, the windshield is fine, but when he puts him down, the windshield is suddenly damaged - before the Decepticon lands.
