Continuity mistake: After John gets off the bike, he looks at the Terminator's back and sees the holes in the jacket. John puts his finger in one hole, but when the view changes the finger is in another hole.
Revealing mistake: In the scene where the Terminator has just broken Sarah out of the hospital and the T-1000 has been shot off the back of the cop car you can see his "metal" arms bending as he rolls across the pavement, and as he gets back to his feet you can see where his real hands are.
Continuity mistake: When John and Sarah are in the pick-up truck trying to outrun the overturned liquid nitrogen tanker, the driver's door of the pick-up truck goes from swinging open, to closed, to open again between shots.
Continuity mistake: At the steel mill, the T-1000 points his finger at Sarah and tells her to call John. The style and position of the loose hairs around her forehead change between frames.
Continuity mistake: When Terminator shoots at the police from the Cyberdine window, from the angles in front he is in the middle of two window frames, yet from the angle shot from behind he is inches away from the left frame.
Continuity mistake: At Pescadero, after Terminator pushes a female guard away, John runs to Sarah and asks if she's okay. Her body is positioned pointing in an 8 o'clock direction first, and in the following shot in an 11 o'clock.
Continuity mistake: At Pescadero, when the female guard breaks Terminator's glasses, from the angle behind the left lens is pointing upwards, yet from the front it's downwards and the damage is greater.
Continuity mistake: When Sarah sees the Terminator coming out of the elevator and crawls backwards panicking, there's a thick line painted on the floor. When the angle changes and shows her standing up and running, the line is gone.
Continuity mistake: When Sarah is about to jam the syringe in the plastic jug, watch its label and notice it turns around between frames.
Continuity mistake: At the hospital, a guard opens a door with his club, takes it away and looks inside. From a different angle the club is still on the door.
Continuity mistake: When Dyson enters the vault, the door is open different amounts between shots.
Continuity mistake: The position of Sarah's left hand clenched on the playground fence is higher-than or parallel-to her right hand, depending on the angle.
Revealing mistake: When the cop by the vending machine is about to be killed by the T-1000, the back shot of him reveals he's been replaced by an obvious mannequin. His perfectly trimmed hair along the nape is now long and messy, and a long stitch appears along his sideburn and down to the neck.
Continuity mistake: When the Terminator arrives on earth, his position differs between the first and second shot, with his left leg protruding more/less and his back crouched/slightly raised.
Continuity mistake: At the hospital, when Sarah is dreaming of Kyle and rests her hair on his left shoulder, her hair swaps from messy to brushed between shots.
Continuity mistake: Sarah takes the chip out of the Terminator's skull and places it by the edge of a table. In the next angle, it is several centimeters away from the edge.
Continuity mistake: In the police car after escaping from the T-1000, John's hair is moving to the left because of the wind. When the angle changes to a POV from the driver's seat, right when he says "I had to get you out of the place", his hair is moving wildly to the right, then a frame later, from a new angle, it's back to the previous mild movement to the opposite side.
Continuity mistake: When the fat cop is killed, blood on his nape and collar appears and disappears between shots.
Audio problem: When Terminator lifts John off his bike and places him on the chopper, John's cry is heard but his mouth isn't moving.
Continuity mistake: When the Terminator's chopper breaks through the gates of the reservoir, they sound as if they crash against the fence, yet a frame later, from the angle in front, the gates are open wide and still.
