Revealing mistake: When Hightower throws the football to the hood, the hood flies back to hit the door. After he hits it, you can see the black wire that pulled him.
Character mistake: When asking for the address of the Blue Oyster club Proctor states it is 621, but when Mahoney arrives it states 655 on the door.
Audio problem: After Captain Lasard delivers his inspiring speech to "Nail these punks," one of the cops stands up and yells "Let's kick ass." even though his lips aren't moving.
Suggested correction: Looked like his lips were moving to me.
They weren't moving. He had a big smile on his face but for him to say, "Let's kick ass." would be impossible without his lips making the necessary movements to say it or with an enormous smile.
I just watched this movie and his lips WERE moving.
I've seen the scene and the mistake is valid. His mouth doesn't move in any significant way for him to say what is dubbed over. His lips barely move as if he simply took a breath.
Revealing mistake: In the scene where Captain Mowser gets his hands glued to his head, he walks out into the locker room naked. In wide shots, you can see that he is wearing a nude coloured body suit.
Continuity mistake: In the beach chase scene, the sun is on the right side of the truck, in the next shot the truck goes flying off a pier with the sun on the left side of the truck.
Character mistake: When Tackleberry tells Mahoney that he thinks he's in love with Kirkland, he asks Mahoney to keep it "10-35." 10-35 is radio code for backup. Since Tackleberry wants his feelings for Kirkland to be strictly between Mahoney and him, he should be telling Mahoney to keep it 10-36, the radio code for confidential information.
Suggested correction: 10 codes vary from agency to agency. Surely a fictional city can have 10 codes that don't match with whatever jurisdiction you're referencing.
Continuity mistake: During Motormouth's fight with the two punks watch closely. One moment the grocer's sitting on the back of his truck, his arms on his lap. The very next shot they're suddenly crossed.
Visible crew/equipment: At the beginning when the woman with the bratty kid gets out of her car, a film light is reflected in the left side of the window.