Goofs

The perspective of the video security camera in the gas station changes twice.

The dog disappears from shot after it has been killed.

The interior light of the yellow Ford during the car chase

When the car driver is attacked near the end, Alex is showered in blood, including her face and teeth. In the next scenes, her teeth are perfectly white and the blood has dried very quickly.

After the killer crashed into the yellow car, the damage to the trunk is visible. In subsequent shots, there is no visible damage.

The copyright notice at the end misspells the company owner of the copyright "Europacorp" as "Europacrop"

The killer takes the ax out of the gas station clerk, so he had to have flipped him over to do so. So it makes sense why the clerk is on his back in a later scene.

When Marie/Alex runs over the car, the driver looks back and it is seen that he doesn't have a cigarette on his mouth. However when Marie/Alex desperately asks for help hitting the window, suddenly a cigarette appears on his mouth, which was obviously not lighted recently.

When the killer crashes into he yellow car, a split second before the hit one can see that the trunk is already damaged, revealing that other takes had been previously made.

When Alex takes the shard of broken glass from her foot after climbing out of the car at the end of the film, you hear it is made of plastic from the sound it makes as it hits the ground.

When the killer is walking along opening the toilet doors in search of Marie, you can see the camera reflected in the white tiles on the walls of the restroom.

When Marie is being shown around the house, in the kitchen there is a boom mic that comes into the shot from above and stays there for a few seconds.

When Alexa introduces Marie to her father in the kitchen.