Continuity: In the scene where John & Catherine are in the hangar at the runway, the Cessna's tail number is N3035C. When the plane is shown in the air, the number is N3973F. When they land, the tail number has changed back to N3035C.

Plot hole: The T-X did not hear Catherine in the Animal Hospital when she was only a few feet away and breathing loudly. Considering the scope of some of her technology, one would assume she would easily find her.

Continuity: In the opening narration, John Connor says that he was attacked by the T-1000 when he was 13 years old. This is wrong. In Terminator 2, we see that John Connor is only 10 years old, as shown on the police computer when the T-1000 accesses it.

Other: When the Terminator scans the doorman at the bar, a display comes up categorizing each piece of the doorman's clothing. The word "briefs" is misspelled "breifs".

Revealing: During the entire hearse chase scene, the transmission shift lever is in park.