Continuity mistake: Toward the end, the sunglasses that the motorcycle thug is wearing suddenly disappear just before he gets caught by the volleyball net and the cops.
Other mistake: As corvette guy races to get away from Ponch, the steering wheel breaks away, coming loose in his grip. Yet the car magically veers a sharp left before halting to a stop, instead crashing into the trees straight ahead of him.
Continuity mistake: Jon parks his motorcycle near the parking garage of his apt. Complex then throws his police jacket over the dog before going inside. However, a following scene shows him unlocking a small storage shed to retrieve the bike before taking off.
Revealing mistake: A load of PVC pipe is secured to the truck with three straps. When the driver yanks on the rear strap, which comes off easily, the other two straps automatically become disengaged allowing the load to fall off the truck. (00:20:20)