When Michael and K.I.T.T. rush up the driveway after the federal agents get gunned down, K.I.T.T. comes to a stop with his front wheel in a plant bed. After Michael has checked on the agents, K.I.T.T.'s front wheel is no longer in the plant bed.
During the race an assassin shoots at KITT and is shooting the passenger side. CJ shows up and takes the assassin out and tells Michael over the com-link that it should be clear. Instead of talking into the com-link or just through KITT he yells out the window and gives a thumbs up out the drivers side to CJ who would have been on the other side of the car on top of a mountain about a half mile off the road and a mile or so behind at that point.
Throughout the race, close-ups of KITT reveal the window and T-top above Micheal are open, but in far shots, all windows are closed.
When Michael starts the race he encounters the playmate racing team in distress over a loss of air conditioning. The scene is only there to let Michael and the audience get a good look at the playmates. They are driving a convertible with the top down the last thing you would do on a loss of air conditioning is to stop the car and stand in the heat asking for help.
When Michael and RC3 part ways on the highway to start their search, the stunt driver for RC3 almost wipes out taking a simple left turn.
When Michael and K.I.T.T. drive into the semi at the end, the semi is suddenly much wider on the inside when Michael gets out, flinging the driver's door open wide. From the lights and the floor it can be seen that the left side of the semi set wall is missing and the audience is seeing extra space beyond the set.
In the semi, Michael says he got the drawings "before the place blew up tonight". The explosion happened at night, and the semi is driving during the day, so it must be the next day after the explosion, not the same night.
After the gunman fires on K.I.T.T., Michael and Lt. Ramirez from the right hand side, hitting the passenger side, RC3 tackles him and gives a thumbs up to Michael who says thanks and offers a thumbs up back, but to the right on the driver's side. Besides being the wrong side, K.I.T.T. was traveling at speed so should have been well past the gunman and RC3 by that point.
When Michael gets back in K.I.T.T. with Lt. Ramirez, he says, "K.I.T.T. plot us a straight line course to get back in the race," but his mouth does not move at all.
When Michael is thrown into the hole by Becker's men, a crew members hand comes out of the hole to catch Michael as he falls.
When RC3 doesn't know which direction Becker has headed on the highway, Michael informs him that Becker is headed south. RC3 takes off down the highway but the direction of the sunlight suggests he's on a more northward heading.