Revealing: 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that in most of the shots (i.e. when he is being shot in the face, and also when the camera is behind him) Arnie has been replaced by a dummy. 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.

Continuity: When the T-1000 is chasing John in the transport truck cab, the sparks always appear before the truck actually hits the walls.

Continuity: 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.

Continuity: When the SWAT van flips over you can see the many bullets holes on top of the Van. However a few frames later the bullet holes change from many to just a few.

Revealing: When the Terminator's arm is caught in the wheel and he rips his own arm off and stands up, if you look closely (slow motion can help, but isn't essential) you can see his real arm stretched behind his back under his leather jacket.

Factual error: There is no place or process in a steel mill where you have a big open pool of liquid steel.

Continuity: 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.

Revealing: 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 doesn't resemble Patrick very much at all.

Continuity: In the scene where the T-1000 disguised as John's foster mother, stabs Todd (foster father) through the mouth, she is standing at the table facing it. When it transforms back into its default form, it has moved away from the table completely. This is so that it can walk forwards (out of the shot) without having to walk around the table.

Revealing: Toward the end of the aqueduct chase, the T-800 pulls John off the bike and it is crushed by the semi. The camera jerks upward as John is pulled off, and you see that Robert Patrick (John) has been replaced with a stunt double. You can tell that it isn't him by the longer, darker hair and the fact that he has somehow grown by about a few inches.

Revealing: When the aqueduct chase has finised, and the T-1000 strolls out of the fire, You can see that the semi is hardly burning in the background. Now, considering that the semi has just violently exploded, and the small bridge it just crashed into was nearly flattened, it seems odd that it shouldn't be burning (very tricky to see, best use zoom in).

Continuity: In the car chase just before the final encounter in the foundry, the T-800 slams on the SWAT van's brakes and the helicopter slams into it, crushing the choppers front. A second later it is in reasonably good shape.

Factual error: In the final act, when the T1000 falls into the molten steel, he sinks and thrashes around rather like a human in water. However, molten steel has a density of around 8 g/cc - about 10 times that of a human. Immersed in such a fluid, he would sit on the surface and fry. Nothing in the movie gives us the impression he has a huge density approaching that of iron. If he did, he'd weigh about 700 kg and would have collapsed the suspension of the police Harley, been too heavy to fly the police helicopter and collapsed the back end of John Connor's car when he leapt on it.

Continuity: 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.

Visible crew/equipment: In the Cyberdyne lobby when the Terminator walks towards the SWAT team, you can see unexploded squibs (pyrotechnics) in the wall behind him to his left (before the shooting starts).

Factual error: In the desert when the Terminator uncovers the cache of weapons, they are stored underground in rifle racks without any protection at all. Weapons are normally stored covered in grease, wrapped in cloth or paper and in wooden boxes. Buried unprotected (even in the desert), a weapons cache would turn into rusty junk in a couple of months.

Revealing: 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.

Revealing: 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.

Continuity: 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.

Continuity: 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.