Continuity mistake: When Tina first becomes a Buddhist, they show a scene of her chanting while Ike is in the other room turning up the volume of his stereo to tune her out. Several scenes later (and several years later, according to the subheadings) after Ike and Tina are divorced, they show the same scene of Tina chanting. Her hair and outfit are the same; it's actually the same exact scene.
Continuity mistake: In the scene where Ike is about to strike Tina for the first time, there are three alternating shots of Tina (Angela Bassett). In the first, her hair-bangs are completely covering her forehead; the second shows her bangs with only one small piece; and the third shows that her bangs have returned again.
Factual error: When they tour the UK with The Rolling Stones the film states 1968, when in reality it was 1966. They then perform "Proud Mary", which Creedence Clearwater Revival did not release originally until 1969, and wasn't covered and didn't become a hit for Ike and Tina Turner until 1971.