White Bird - S1-E19
Revealing mistake: When Michael grabs the newspaper to read about Stevie's abduction, all paragraphs are the same one, starting with the words "The facts".
Other mistake: When the guy goes to go around KITT to get behind Michael, as KITT cranks up, you see movement in the front seat.
Visible crew/equipment: At the end, as Michael and KITT do the run up to the jump at the tan van, the action camera can be seen on the lower portion of the passenger side.
Revealing mistake: At the beginning when Michael has KITT move the truck, you can see the dolly apparatus that makes the truck's rear end swing out.
Revealing mistake: In the scene where two truckers try to smash up KITT with baseball bats, and KITT supposedly moves a bit backwards by himself, you can see someone 'helping' him near the passenger's seat.
Nobody Does It Better - S1-E21
Revealing mistake: When you see KITT driving after Michael is released from prison, you can see that it is a stunt driver and a normal steering wheel. The driver also isn't talking yet we hear Michael's voice. (00:15:50)
Nobody Does It Better - S1-E21
Continuity mistake: When Michael gets hit on the head in the private investigator's home, he falls in the chair and faces left. Next shot of him he is facing right. (00:17:45)
Nobody Does It Better - S1-E21
Continuity mistake: When Julian leaves the building during the party, you can see this isn't the actor playing the role of Julian but someone else. (00:23:10)
Nobody Does It Better - S1-E21
Continuity mistake: When KITT forces the 4x4 off the road, you can see both people inside when it crashes wearing their safety harness. In the scene before when you see inside none of them are wearing any kind of belt. (00:37:40 - 00:38:15)
Nobody Does It Better - S1-E21
Visible crew/equipment: When KITT jumps over the creek, as the angle changes to show the car in flight, the action camera for exterior shots is plain to see mounted on the passenger side.
Nobody Does It Better - S1-E21
Continuity mistake: After KITT turns around to pursue Armand, the sensor goes from the usual side to side motion to a different pattern and back within a few seconds.
Answer: KITT didn't choose to go off the cliff in Goliath Returns, it just happened as he tried to avoid Goliath. Just 'cus it happened, doesn't mean It's gonna cure his fear of "flying"