Continuity mistake: In the scene where the girl jumps to her death from the balcony, it shows her hitting the car towards the right halfway onto the windshield. Then in the next shot, it shows her lying right in the middle of the roof of the car. (00:04:05)
Continuity mistake: When Julian sarcastically sings 'Silent Night,' he jumps up in the car and knocks the mirror on the dash upwards out of place. In the next shot it shows it back to normal and then it goes out of place again.
Continuity mistake: While Ricky is on his shooting spree, he manages to shoot at an oncoming car, causing it to to crash and roll over. As the car rights itself, the driver and the car seats are visible. The right rear passenger window is also fully intact. Just before the car explodes, the driver has disappeared, along with the car seats and the same rear side window is now completely missing.