After one of the bad guys tricks KITT into backing on to the lift, KITT's wheels are rotating in the close-up shot , but they are not moving at all in the wide shot.
After the jailbreak scene in which K.I.T.T. was clearly covered in dust and debris from the demolition of the jail wall, K.I.T.T. is then suddenly spotlessly clean as he drives away.
When the villains' car is stopped, it rolls off into a ditch right side up. Next, the villains escape the car that is now upside-down.
When Michael parks and gets out of K.I.T.T. to go into the Alpine Crest Hotel, between parking the car and getting out, there is a sudden jarring cut to a completely different location and building.
The CIA is prohibited to operate within the US. As this is a money counterfeit operation, the proper agency to investigate is the Secret Service.
During the jailbreak scene, you can tell that it's an exact copy from Knight of the Phoenix Part II. You can tell by how Michael is laying down on the bed, how he skips over to KITT to get in and how he holds his shoulder after he gets in just like he did in KotP.
When K.I.T.T. crashes through the walls of the jail and then leaves again, the ragged edges of the "cement-block" wall are not cracked and broken the way real concrete would crumble and fall when it is battered apart --- obviously a cardboard prop designed to look like cement.
When K.I.T.T. is pulling out of the residential driveway with Martha in the driver's seat, the hood of the car is visibly loose and flapping up and down.
When K.I.T.T. has been let down from the jack in the garage and makes his exit, the sliding garage door somehow opens itself with no explanation given whatsoever.
When KITT turbo boosts over the produce truck the undercarriage is flat (no mufflers, drive shaft, etc.) suggesting a mock up model is being used.
When Michael and K.I.T.T. are prevented from exiting the alleyway by the crowd of people gathering up bank notes, K.I.T.T. can be seen slowly approaching and coming to a complete stop before the tire screech sound effect is heard.
When Michael is chasing Ron through town, the ramp that KITT uses to "turbo boost" over the traffic is briefly visible.
After Michael turns around to head back to town, he stops in an alley way. When he opens the door, you can see the camera man's reflection on the door.
In addition to the location clue above Covina Drug Store and Clippinger Chevrolet (Located in Covina) are seen in "Alpine Crest".
Though the town's name is Alpine Crest, when Michael is talking to the sheriff the street sign in the background says School Street and in smaller letters "Covina".