Daz

Revealing mistake: Obvious stunt double for John Connor when he takes a wide berth from the street into the aqueduct. His hair, for example, is no longer across his forehead. (00:34:45)

Daz

Revealing mistake: Special Edition. The biggest giveaway about the false mirror in the 'chip removal' scene is that John's 'reflection' has his back to the mirror when Sarah is drilling, whereas the real John is standing side-on to it. Also notice that John nervously looks at the camera in this shot. (01:11:50)

Daz

Revealing mistake: When the T-800 is being attacked by the SWAT team in the Cyberdyne building, notice that in most of the shots (i.e. when he is being shot in the face, and also when the camera is behind him) Arnie has been replaced by a dummy (his skin is unnaturally pale). When the T-800 pulls out his gun and starts shooting the SWAT team, it's now back to the real Arnie, and notice how none of their bullets are now hitting his face and body, even though shots are still being fired. (02:00:20)

Daz

Revealing mistake: When Arnold begins to beat up and throw around the workers of the hospital, the African American worker is thrown into a window. If you look carefully you can see that the window he is thrown into is a different kind of glass than the other windows that surround it, indicating that this is not real glass. You can also see that none of the other window frames of glass on the inside of the corridor. There is just the metal frames covering the windows. In some shots later in the scene when the T-1000 is chasing them down the corridor you can see the bits of glass that were left over from before have disappeared. (01:01:05)

Revealing mistake: After the Terminator uses John Connor's switchblade to remove the skin on his forearm, the wires controlling the Terminator's prosthetic arm are visible underneath his shirt, at the top right of his torso. (01:37:00)

Continuity mistake: When the Terminator is riding the Harley chasing Young John Conner, John is down in the reservoir and the Terminator is up on the ledge, as he approaches the end of the wall, through the Terminator's point of view on the bike you see the wall end, it clearly extends to a point, on the very next scene as he makes the jump the point has all of a sudden gone from a point to a squared off edge. Obviously the jump would have been a disaster if the edge was pointed. (00:35:30)

Revealing mistake: When the T-800 and T-1000 first begin to fight in the steel mill, the T-800 puts his fist through the T-1000's head causing him to revert to liquid metal form, then as the T-1000 is throwing the T-800 from side to side you can obviously tell that the T-1000 is just an actor wearing a highly metallic mylar suit in some shots. (02:14:10)

Continuity mistake: In the shot of the T-800 lifting John off of his bike, the truck's left headlight is missing, but after that it is there. (00:37:30)

Mark Cuss

Continuity mistake: If you watch carefully when the T-1000 has driven off the bridge in the truck, you can see the suspension and steering gear collapse and shift (severely) to the driver's right. A moment later, the alignment is perfect. (00:33:45)

Revealing mistake: In the scene where John is helping Arnie up after the T-1000 has been exploded and sent to his doom in the fiery pit of molten steel (Arnie is saying "I need a vacation"), you can see how the effects crew haphazardly put on a fake busted mechanical arm underneath Arnie's coat and how it bulges out from his shoulder. You can almost see how they just tied Arnie's arm back behind his back and put a fake arm over him. (02:23:35)

Revealing mistake: When the tanker truck (liquid nitrogen) is sliding along the ground the sparks can be seen not to be coming from directly under the tanker but ejecting from small canisters slightly higher up the vehicle. (02:02:55)

Continuity mistake: After The Terminator exits the bar in the beginning and takes the gun from the bar owner while advancing towards the owner he takes his left hand off the barrel. From behind though, he's still gripping it. (00:09:20)

Continuity mistake: The gas that the Terminator shoots at the SWAT members while inside the foyer of the Cyberdyne building, is nowhere near the front door when compared to when the Terminator exits the building. The Terminator has to walk through a gas haze as he opens the front door. (01:59:45)

Continuity mistake: Immediately after the Terminator shoots the gate guard at the mental institute, there is blood on the guard shack wall. A few seconds later, the blood has vanished. (00:57:30)

Continuity mistake: During the chase scene after the T-1000 commandeers the tow truck, the shadows are inconsistent from shot to shot. Understandable, as each shot was made at different times during the day, but still noticeable. (00:32:00)

Continuity mistake: As the T-800 is weaving around the back of the semi-truck just before the end of the aqueduct chase, there is a panel of some sort dangling around the back along with the licence plate. From the far shots the licence plate is gone, and the panel is bolted on on. This changes about two times. (00:37:20)

Continuity mistake: During the chase in the beginning, Arnie shoots out the left front tire of the truck causing it to come mostly off the rim; yet when it runs into the divide and explodes, the tire is completely inflated again. (00:37:45)

BillyBlake

Revealing mistake: When the two Terminators first fight in the steel mill, in close - up shots the T-1000 is played by Robert Patrick, but in medium shots it's a stunt double who looks nothing like Robert Patrick. (02:13:55)

Continuity mistake: When the T-800, Sarah and John are escaping the mental hospital in the elevator the T-1000 stabs through the top and cuts Sarah in the back. Later when are driving away from the hospital in the police car Sarah hugs John. When the camera shows Sarah's back her shirt is torn but the wound itself is gone. (01:03:10 - 01:06:45)

Continuity mistake: When the Terminator pulls John off the dirt bike during the drainage ditch chase, the dirt bike falls onto its left side and the gas tank is about to be crushed by the tow truck. The next shot from another angle shows the dirt bike laying on its right side, with the rear tire the first thing to be crushed under the truck. (00:37:30)