When Ponch is driving the getaway car in the first heist scene, it's shown as a Chevy SS right up until they arrive at the docks. As he's about to torch the getaway car, the car changes to a Chevy Malibu.
When Baker cuffs the guy driving the red Ferrari, Ponch takes the guy away from Baker in cuffs. Then with the camera view changes, the guy has no cuffs and his wallet in his hands and Ponch doesn't have Baker's cuffs in his hands.
At about 33 mins into the movie when Karen is in the pool talking to Jon, in one shot she wrings water out of her hair and lowers her hands, it cuts to a shot from behind her and when it cuts back, she's still wringing water from her hair. This happens maybe one more time.
Near the end of the film there's a close up as Ray Kurz is shown tying motor officer's boots which only have laces for a few inches, at the instep of the boot. Later, when he shoots the girl in the swimming pool and a few moments later, when he walks up on Karen who is handcuffed to the post, he's wearing combat boots, which have laces all the way up to the top. Later on, in the fight scene in very last scenes of the film, he's back in motor boots.
When Ponch and Baker go to TJ's second home (0:51:38), TJ and Barton's drivers license are shown to them, you can notice clearly that David Barton's Drivers License shows an error in his Date of Birth (DOB), it says 41/21/1976. It was probably supposed to read 01/21/1976 or 11/21/1976.
Early in the film, Baker mentions that his right humerus (right upper arm) is titanium. At the end of the film, though, bullets are fired at him and they strike his left arm, causing one to ricochet and kill the villain.