The amount of ketchup on Ingrid's french fry.
The Cobra throws a knife at one man, in the supermarket, and the knife hits him in the center of the chest. Later, it is in his side.
The car's rear window repairs itself after being broken.
In the motorcycle gang fight prior the truck chase, Cobra throw some grenades, one against a Harley-Davidson style cycle; when the grenade explodes and the bike flies into the air, the bike is a totally different model, looking like a small trail one.
During the big shootout at the hotel and afterwards, Cobretti uses a laser-mount sub machine gun with a 30 round magazine . Yet we see him shoot loads and loads of rounds, yet he never changes the magazine.
As Cobretti takes Ingrid out of the city there is a close up of someone loading a shotgun but they are loading spent cartridges because you can see that the round percussion caps have been struck with a firing pin.
At 40:45 when Ingrid is chased into the bathroom by the Night Slasher, she has to pull the door shut. In the next scene, the Slasher is seen slamming his shoulder into the door to try and open it as if the door opened in.
At 40:45 when Ingrid is chased into the bathroom by the Night Slasher, she has to pull the door shut. In the next scene, the Slasher is seen slamming his shoulder into the door to try and open it as if the door opened in.
As most hospital doors are solid wood, It would seem as this is an oversight as it would be difficult to knock down a door in direction it was not meant to open.
As most hospital doors are solid wood, It would seem as this is an oversight as it would be difficult to knock down a door in direction it was not meant to open.
When ramming a road block, the truck appears to change from blue to red and back to blue. However, it can be seen from the next shot of the truck spinning out that it is the same blue truck all along; the underside of the hood and the rest of the engine compartment are painted red.
When Cobra blasts the supermarket psycho with his .45, no shell casings are ejected from the chamber.
In the sedan/pickup chase, both of Cobra's headlights are shot out at the start with pinpoint accuracy. A minute later as the cars race down the freeway, the holes where Cobra's headlights used to be are filled with black plastic discs.
As the motorbike gang are approaching the town, a woman is trying to escape them, when she is doing this, she is seen picking up an obvious dummy instead of a real child.
In the supermarket, the killer takes aim down an aisle and shoots a shopping cart. The cart explodes into the air, and visible on the bottom of the cart is the device which set off the charge.
When Sly drives the truck around a corner you can see two drivers in the cab, even though he's supposed to be escaping alone.
The standard legal disclaimer at the end of the credits features a misspelling; it reads: "No indentification [sic] with actual persons, places, buildings and products is intended or should be inferred."
At the end, when Gonzales is loaded into the ambulance, the vehicle does not leave for the hospital immediately.
When one of the guys remarks "He's crazy! He's crazy!" during the car chase, it's obvious that he's not shouting as he keeps his mouth shut.
Axes beating out of sync in a close-up.
When Cobretti picks up the white telephone at his own personal residence to talk to his police partner there is no telephone cord visible, only an empty telephone cord hole's plug in on the bottom of the phone. Oops.
In the scene where he bumps the "hispanic gangsters" car to park his car and he argues with them, and tell them "he's bad for their health" he rips the mans white undershirt and a taped lapel mic is clearly visible on the mans chest, and again in a subsequent scene
Throughout the entire supermarket scene, a cameraman and a boom are reflected in Cobra's glasses.
Two crew members sit by the right side of bridge, during the car chase - when the guys jump over the bridge a second time.
When Cobra throws the grenade at the motor cycle and it explodes you can clearly see the pipe attached to the bottom of the bike used to launch it in the air.
When Cobra speeds off on the motorcycle with Ingrid at the end of the movie, a cameraman is clearly visible in the background filming the previous closeup shot.
The crime statistics Cobra gives in the opening narration are far too high, even by 1986 standards.
During the grocery store robbery, a SWAT team member sets up on the roof of a nearby store with an HK94 submachinegun. The relatively short 100 meter effective range of its 9mm round would make his position completely useless in that situation.
After the final fight, a police officer takes away Cobra's machine gun, but does not notice the pistol stuck in his belt.