As MacGyver and Sam prepare to ride off, Pete waves to them, the blind Dana Elcar being unaware that their backs are turned.
The motorbike Sam rides through a window loses and regains its rack during the sequence.
The character "Robo" from "The 'Hood" is here referred to as "Lobo" and is now white instead of black. However, the two artists have the exact same graffiti style and are on probation.
Morganna is mixing her gunpowder, and uses proportions of 20 to 7 to 1. The proportions typically have to be 7.5 sulfur to 1.5 charcoal to 1 sulfur. Also, the substance she has marked as 7 is white, but charcoal wouldn't be white. And the substance she has marked as 1 is black, but sulfur isn't black.
The slat that MacGyver is holding onto with both hands is shown to splinter in the middle at the end of the previous episode, and in the recap at the beginning of this episode. However, when the episode actually starts, it is undamaged.
This episode finally reveals MacGyver's first name: Angus.
There is not enough volume in the wineskin to contain sufficient hydrogen to lift it off the ground, much less bear the weight of the kite and cloth.
The guard calls Morgana "Your Highness", but since she is a queen, she should be addressed as "Your Majesty".
When Prometheus calls the first time, he tells them to go to an abandoned hotel to view his work and doesn't mention any other buildings. However, the building where the bomb actually is located at is a clothing warehouse. The fire department searches there first and finds the bomb. The hotel is across the street and it is later revealed Prometheus is hiding there. If the fire department had gone to the hotel as Prometheus directed, they would have captured him and not found the bomb.
When MacGyver runs Murdoc's phone number through a reverse directory, the same number (213-555-7836) is shown at two different addresses.
When the police sergeant calls Mama Lorraine to tell her that Kelly is at the theater, he clearly identifies himself as "Sergeant Lee". However, he is identified in the end credits as "Sergeant Rudley."
When arriving at Sherman's, MacGyver parks parallel to a curb with parking spots that are clearly marked for 45° parking.
The notes that Connie sends to Pete refers to him as "Peter," which he hates. She also refers to him that way when she arrives at the hospital. However, in "Family Matters" she called him "Pete" constantly from the moment they were reunited.
Pete's ex-wife claims the Phoenix Foundation was more important than his family, which can't be true since they'd been divorced before Pete worked for the foundation.
A car that explodes, complete with shattering glass, is seen just after to be undamaged, save for a small hood fire.
The criminals wasted tons of time on doors, eventually setting on crashing a car through a wall, when there was tons of windows that could have been smashed.
After the security guards arrest MacGyver, they put him in the back seat of what is clearly a police car. However, there is no cage separating the front from the rear, and the rear doors have easily-accessible push locks.
At the 44:25 mark as MacGyver jumps onto Marsh's car, his hair becomes a dark-brown/black as the stunt double takes over.
MacGyver uses a tape recorder to capture phone dialing, and he speaks loudly towards the end. When the tape is played, his voice is not heard.
As established in "Serenity", Serenity is located in Montana. However, Hole-in-the-Wall was in Johnson County, Wyoming, considerably south of the Montana/Wyoming border.