Continuity mistake: In the kitchen scene early in the movie as Max is leaving to meet Goose, the camera briefly zooms in on his infant son in the floor playing near his clothing/equipment. The child is playing with his service revolver! When the camera pulls back to take in the full room again, there's no sign of the gun. (00:14:43)
Continuity mistake: When the first car crashes at the start the bonnet is hanging off, one of the policeman pulls it off and it lands on the ground upside down, when the car pulls away the bonnet is now the right way up.
Other mistake: When Jessie realises that her baby is missing, she runs out into the yard, stops and does a slow 360 turn before looking forward again. She then hears the Toecutter's voice, looks to her right and sees all the knightriders, including one holding her baby. So somehow in that slow 360 turn she did previously, she somehow managed not to see 15 knightriders standing close to her.
Plot hole: Near the end of the opening chase, the caravan and the pick up truck are completely blocking the road, making it impossible for the Night Rider to pass the way we see him do.
Continuity mistake: When Max first gets in his car at the start, he listens to the chase on the radio and we see the reflection in his sunglasses showing the bonnet of the car, a yellow road sign, and what looks like a white single decker bus/coach (could be the film crew bus). When he pulls away, none of those things are there. He drives down the road and pulls up, waiting for the Nightrider to appear, and we see the same reflection in the close up to his sunglasses again - sign, bus/coach and bonnet, but the road in front is clear.
Continuity mistake: Towards the end of the opening chase, when the police car flips over, just before this you can see the stunt driver in the car and the passenger is missing, not even replaced by a dummy.
Visible crew/equipment: When Goose is interrogating the stoned biker he turns around and says "Take your time Charlie, we've got plenty of it", when he turns you can see the feet of the camera operator reflected in his glasses. It cannot be the other policeman as he is in the other room.