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.
Visible crew/equipment: When Leatherface is chasing Jenny, she gets into a couple's caravan. After Leatherface tries to get in, it cuts to an exterior shot and as Leatherface is running along with the caravan, in the window behind him you can see a crewmember with a cap on, running behind him off-screen.
Continuity mistake: Jenny wears a white silk scarf loosely around her neck, as part of her prom outfit. As Leatherface chases her through the muddy river, the scarf falls down her body to her waist. In the next shot though, it's back round her neck. But oh no, the fun doesn't stop there. After this, she removes the scarf from her neck and throws it in the river, not one, not two, but THREE times between shots.
Continuity mistake: When Jenny is hiding in the trees all out of breath, after Vilmer drives off in his truck, the left shoulder strap of Jenny's prom dress is up on her shoulder but then in the next shot it has fallen down her arm. In the following shot it is back on her shoulder! Also there is a flowery corsage on her dress which is on top of a bow which is part of the dress; but in the next shot the corsage is under the bow, then back to being on the bow in the final shot.
Revealing mistake: In the end when Jenny is sitting in a chair at the hospital with a doctor, in the glass screen behind the doctor you can see the reflection of the gurney which will be pushed on-screen in a few seconds. The doctor is obviously waiting with the gurney for his cue to come past.
Continuity mistake: When Leatherface gets Heather in the house, he grabs her and drags her down the hallway, as he enters a room, Heather grabs the sides of the doorway, to pull herself away from him. In the shot, you can see the wall to the right of the doorway has a mirror on the wall, nothing else, and on the counter below is a few lone lightbulbs and a coke can. However in the next shot, so many objects appear. There's now meathooks, chains and belts hanging on the wall either side of the mirror, and the counter is now covered in canisters, metal barrels and boxes.
Continuity mistake: When Leatherface grabs Heather on the porch, he pulls her towards the door and then rams into the door with Heather in his arms going into the door first. However when it changes to an interior shot of the house, and they come bursting through the door, Leatherface comes in first with his back to the door.