Factual errors: The Jackson 5's first single was "Big Boy", not "Kansas City."
Anachronisms: When Michael is in the studio laying down the audio tracks for the song "Human Nature", the caption reads that the year is 1983. Human Nature was on the "Thriller" album, which had already been released in 1982.
Plot holes: What are the odds that nobody on the airplane knew the lyrics to "The Star-Spangled Banner"?
Factual errors: Before the brothers go on there first tour with Motown in 1970 they are shown in the recording studio listening to playback of "Rockin' Robin" Which wasn't recorded until 1972 on Michael's first solo album.
Audio/visual unsynchronized: When Katherine is holding her new baby and announces his name to be "Michael Joseph Jackson", the visual shows that she is actually saying something different.
Continuity: During the montage of the group's touring experiences, there is a shot of the adult Jermaine character riding on the plane. After this montage, the movie continues using the teenage Jermaine character.
Audio/visual unsynchronized: When Jermaine meets Hazel after getting off the plane, Hazel's mouth movements don't match what she's saying.
Errors made by characters (possibly deliberate errors by the filmmakers): When Joe and the Jacksons get robbed after the show, Jermain is shown beside Joe in one shot and then back by the steps in the next shots.
Factual errors: Michael Jackson was born 29th August 1958 not 1959.
Factual errors: "I'll be there" was recorded by The Jackson 5 after "ABC" in 1970. "ABC" was actually first recorded in 1969 around the time of "I want you back."
Factual errors: On the night that it is raining, Katherine turns on the light on the left then talks to Joe. When she is done talking, she turns the light off from the right.
Continuity: When the boys are congratulating Tito on his engagement in the den Jermaine fixes some root beer floats. His float has not yet settled, but when he clicks his glass to Tito's it has settled. Then when he brings his glass back it is once again not settled.
Audio/visual unsynchronized: After the fight with Jackie and one of the kids from the neighborhood Jackie says to his daddy "I did it" but his mouth does not move.
Continuity: in the scene in which the kids are singing while cleaning the house Tito picks up and begins to play a guitar which is not given to him by his father until several scenes later
Factual errors: In the scene when the actor who plays Michael Jackson is doing his solo performance for Motown, the single, glittery glove he is wearing is on his right hand. In the actual performance, the real Michael Jackson is wearing the glove on his left hand.
Miscellaneous: During their performance at the Apollo, the strap on Jermaine Jackson's bass snaps off, nearly dropping the bass guitar. But since Michael Jackson's character is obviously the focus, this scene was never corrected.