Continuity mistake: When Jenny jumps through the window, the whole window (frame + glass) breaks and falls out. When Leatherface runs to the window, the middle wooden frame of the window is back in the windowframe, intact. (00:37:45)
Continuity mistake: When Jenny jumps through a window to get away from Leatherface, the window next to the window she jumps through is closed. Seconds later it is open. (00:37:45)
Continuity mistake: When Leatherface chases Jenny on the roof, he starts knocking bricks off of the chimney with his chainsaw. Some bricks that fall off the chimney reappear back on it in the next shot. (00:38:25)
Continuity mistake: As Jenny is climbing up a big aeriel on the roof, Leatherface swings his chainsaw at the aeriel. In shots of him swinging the chainsaw, Jenny has disappeared from the aeriel. You can almost see the whole aeriel, and she isn't there! (00:38:40)
Continuity mistake: Jenny's position immediately changes, when she jumps onto the wire. (00:38:50)
Continuity mistake: After getting the pizza's, as Darla is walking across the porch to indoors and then stops to have a go at W.E, the door behind them goes from wide open to shut between shots. (00:47:50)
Continuity mistake: When Darla arrives home, as she is walking indoors with the pizzas, the pizza boxes rotate in her hands a few times, evident by the large "pizza" printed on one side of the box. (00:47:55)
Continuity mistake: W.E brings a big part of a door into the kitchen and says "look at what your brother did to this door," and then he places it down so it leans up against the other door. Then moments later the big section of the door is now lying on the floor. It is leaning back up again a few seconds later. (00:49:25)
Continuity mistake: Between shots from when Vilmer leaves the kitchen (and throws the big broken part of door at the wall) and then when W.E leaves the kitchen seconds later, the trash over the hallway floor and the kitchen floor (cardboard, wood, paper) drastically differs position and location, and additional trash appears too. (00:50:50)
Continuity mistake: The cut above Jenny's left eye differs in various scenes. For instance, in the kitchen scene it is at least a centimetre above her eyebrow, but then in the scene where Vilmer holds the knife up to her throat it is right above her eyebrow. (00:51:20 - 00:54:30)
Continuity mistake: After Jenny yells "It's fucking pathetic" to Vilmer, Vilmer gets mad and throws a book across the room, and then grabs Darla and throws her to the floor. The chair next to Darla has three bones on the top of it as 'decoration.' As Vilmer grabs her and throws her down, the tall white bone on top of the chair falls to the floor. But in the next shot as Vilmer whacks W.E with a hammer, the bone is back on the chair. (01:05:35)
Continuity mistake: When Vilmer lights the girl's back on fire as she's passed out at the table, she gets up and starts stumbling towards a wall covered in keys. As she stands up, there is no visible fire on her back. In the next shot as she is up against the wall, her back is on fire again. (01:06:25)
Continuity mistake: In the scene when Vilmer is standing on Darla's throat, we see her laying across the floor horizontally away from him, but in the next shot, we see that she is laying vertically to him.
