Continuity mistake: The T-1000 punches his body through the window of a helicopter to get inside. An instant later, the hole in the windshield is gone. (01:56:35)
Continuity mistake: When the T-1000 is driving the truck, he drives off a bridge and the windshield pops off, but in the next scene the windshield is back. (00:33:45)
Continuity mistake: When the T1000 is chasing John, Sarah and the T800 out of the hospital, the license plate on the cop car changes several times: from 999273 when we first see it to 999232 when it actually stops, then to 999001 after it jumps the grass verge, then from 999013 when it starts going straight, to 999018 when the T-1000 latches onto it. (01:00:50)
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)
Continuity mistake: The scene where John and his buddy hack into the ATM and get cash, John is telling his friend his mother is a psycho. Watch closely as John puts on his backpack twice. (00:17:50)
Continuity mistake: In the scene where Sarah Connor shoots Dyson in his house, it pans back and forth from him to her. In each shot of Dyson in his living room, the magazines on the coffee table are scattered, then stacked, then scattered again. Also, if you look at the blood on his shoulder, it is very heavy in one shot and very scarce in the next. (01:33:55)
Continuity mistake: When the T-1000 drives his bike throught the glass of the Cyberdyne Systems building to get onto the helicopter, the windshield falls off. When you see it drop to the ground, it's still attached to the bike. (01:56:20)
Continuity mistake: During the bar scene, the Terminator is stabbed in the chest. You can see that he gets stabbed exactly above his right nipple. A few shots later, when he goes in the kitchen to get the biker's keys, the cut with blood dripping appears on his ribcage far below the nipple. (00:08:20)
Continuity mistake: In the scene where the T-800 and the T-1000 have their first shootout in the mall, John Connor begins to run down a series of stairs to get to his dirtbike. Every time he passes a door it reads the level he's currently on. You will see he passes level 2 twice. (00:31:40)
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)
Continuity mistake: In the scene where Sarah has just shot Dyson and she is crying against the wall, John comes up to her and starts hugging her. Every time the scene changes back to the hugging, look at John's watch. The time changes every time. (01:35:20)
Continuity mistake: Towards the end of the film, when the T-1000 controlled police helicopter bears down on the SWAT truck, Sarah tries to gun it down and the T-1000 returns fire. Look carefully at the shots of the back of the SWAT truck, and notice that the bullet marks made by the T-1000 on the closed door keep changing between shots. (01:57:55)
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: After the T1000 performs the bike jump to the helicopter he tells the pilot to get out. Watch as he jumps out, the door shuts properly, it then cuts back inside where the T1000 proceeds to close the door for a second time. (01:56:45)
Continuity mistake: When the T-1000 is entering Dyson's house, he hears on the police radio that Sarah Connor is at "2144 Kramer." Later, just as the police show up at Cyberdyne's offices, the voice over the radio gives the address as "2111 Kramer." (01:45:25 - 01:49:50)
Continuity mistake: When the Terminator saves John on his bike in the alleyway and the truck explodes in a ball of flames, the Terminator takes his shotgun out and cocks it to aim at an approaching object. After realising it is a flaming tire, he leaves. However, after stopping to relate his mission to John, the Terminator ejects the fully loaded cartridge (which sounds suspiciously hollow when it hits the ground) and reloads again. (00:37:35)
Continuity mistake: In the Steel Mill scene, Sara has 8 shells. She shoots the T-1000 once (7 left), then she drops an unused shell (6 left), then reloads (5 left in theory, but there are now 6 on top of the gun). Later she loads the shotgun with the other 5 shells (one's disappeared, but it's back to what there should be) and recocks the gun, ejecting the other good shell. Later, she nearly kills the T-1000 by shooting him with 7 shells. (02:10:20)
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)
Continuity mistake: In the scene where the Terminator has grabbed John and won't let him go until he tells him to, the Terminator almost shoots two guys who come to help. John tells him to put the gun down, which he does. Now, when John picks up the gun to hand it back to the Terminator, it goes from being cocked (the hammer pulled back) when it is in John's hand, to uncocked when Arnie takes it, to cocked again when he puts it in his belt. (00:48:50)
Continuity mistake: The tanker truck is shown having two headlight lenses on each side on the front. During most of the chase the inside lamp is lit, but when Arnold shoots it with the grenade launcher the outside lens is lit. The next shot shows the inside lens lit again, but then when Arnold climbs on the hood of the tanker to fire through the windshield the outside lamp is again lit. (02:06:20)