Continuity mistake: Right after Jim has his nightmare while sleeping in the car, he looks around for Grace, who is standing outside the car looking at scenery. When Jim sees her, she has her arms crossed over her chest. The next shot, with Jim walking around the car, she has her arms by her side, and immediately after, the shot with Jim approaching her, she has her arms crossed again. All this took place in about 2 seconds, not enough time to drop her arms and recross them exactly the same way as the first shot. (00:19:35)
Continuity mistake: After the initial fight scene in the car with John Ryder, after he is thrown out of the car, the next shot shows the car driving off at normal speed, outrunning him. But in the next shot, he is shown coming to his senses and the car goes by him again as if he, when falling out of the car, tumbled very fast in front of the car when in fact he should, just as anything falling out of a moving car, tumble backwards. So there is no way for the car to go by him after he was pushed out. (00:16:30)
Continuity mistake: Near the end of the movie, when Jim and Grace break into the motel room to clean up and rest, they enter the window of unit 12, with the door to the right of unit 11. After Jim has left the room, and Grace is woken up, she leaves the room through the door, which we now see is unit 11, the door on the left.
Continuity mistake: Right after the initial fight scene in the car with John Ryder, after he is kicked out of the car, and Grace gets back into the front seat, she reaches behind her and locks the passenger door. In the next shot, when she is looking for her cell phone, the door lock is not depressed. Some older Cutlass 442's had lock barrels that were higher than normal, or were screwed on less than others, but this appears to be a fully extended lock barrel.
Factual error: During the police chase, the helicopter calls in a car approaching at speed behind the police cars, but he calls it a "late model Trans Am." The Trans Am is an early model at best, as it is a 79 to 81 second generation (of 4) Trans Am. A late model Trans Am would be more accurately described as one of the fourth generation models built until 2002, and look nothing like a 79 to 81, even from the air. It might be considered a character mistake, except that police are generally knowledgable about the make and style of cars from various years. If the pilot or passenger of the helicopter were able to identify it as a Trans Am, they should be able to identify it as an older model, not a late model.
Continuity mistake: In the scene when the police are chasing after Jim and Grace, Ryder suddenly pulls up and shoots one of the policemen. Then two of the cruiser cars collide and skid down the road. During this scene the metal barriers on the sides of the road keep disappearing then reappearing. (00:49:30)
Revealing mistake: When Jim and Grace are driving along in the stolen sheriff car, away from all the police cars and Ryder, the car's back window is shot and completely shatters and fragments. Yet in a following shot we see Jim look into the rearview mirror, and he gets a clear view of behind. The back window was shattered and cracked however, so he shouldn't have got that nice clear view. (00:50:20)
Continuity mistake: When Jim is sitting in the back with the father of the family that Ryder murdered, the father is dying from his stab wound. During the entire scene, the amount of blood on his chin keeps decreasing then increasing back and forth, and the pattern of it keeps differing as well. (00:27:30)
Continuity mistake: When Jim and Grace are in the petrol station, while Grace is using the bathroom, Jim is talking to the clerk. During the whole scene, the dampness of his tee-shirt keeps changing. In some shots it is completely wet, while in others the shirt only has damp patches. (00:08:45)