In the opening narration, John Connor says that he was attacked by the T-1000 when he was 13 years old. This is an inconsistency. In Terminator 2: Judgment Day, John Connor was only 10 years old as shown on the police computer when the T-1000 accesses it.
Sarah Connor's graves states she was born in 1959. In previous movies, her birth year had been given as 1965.