A nameless member

Revealing mistake: When Paul Kersey blows up the restaurant, there are obvious dummies in the booth. (00:46:01)

Revealing mistake: When Mike Matthews' car explodes, it's a dummy in the car, not a person.

Revealing mistake: When Martin Lamanski's limousine crashes into the gasoline tanker truck there is nobody in the car. (01:14:01)

Revealing mistake: When Jack Slater is about to play chicken with the guys in the pickup truck, it's a stunt driver. (00:30:55)

Revealing mistake: When the supervisor is telling Geronimo to clean up the dog feces, there are three men across the street in front of Al's Coffee Shop watching the filming. (00:42:55)

Revealing mistake: When Rick is having sex with Carmela, it's obvious that it's completely fake. The filmmakers tried to hide it by filming through the keyhole and only showing half their bodies but at one point you can see that Rick is lower than Carmela. Also Carmela is voiced over because her voice doesn't match her mouth. (00:43:10)

Revealing mistake: When they are escaping from the giant mosquitos, Peter shifts the car into 1st gear, not drive. (00:40:40)

Revealing mistake: The stunt double for David Patrick Kelly is seen driving the car, just before he crashes through the gate of the parking garage. (00:37:50 - 00:40:10)