Continuity mistake: When Evelyn smashes into the bratty young women's car, we see her smash into it four times and drive away. Later, when her husband comes home, he tells her he doesn't understand how she could have hit a car six times by accident. (01:16:15 - 01:17:50)
Suggested correction: They just didn't show all of the strikes to the VW.
Other mistake: As Mrs. Threadgood is recounting the illness of Ruth, she mentions that Ruth was moved downstairs in the house. In fact, Ruth is actually in bed in an upstairs bedroom.
Suggested correction: The scene was moved downstairs after Jon Avnett (the director) thought how he wanted to shoot Ruth's death. He wanted Idgie to be looking out of the window, not actually seeing Ruth when she's passes. Jon thought that they would have moved Ruth downstairs where it was easier to take care of her instead of going up and down the stairs. So Ruth actually died in the living room of the house that was turned into her makeshift bedroom.
Continuity mistake: At one point the road leading through Whistle Stop appears to be freshly paved, but in the following scenes it's just a muddy road.
Suggested correction: In current time it was a paved road. In the memories (past) it was a dirty road.