Pop Goes the Diesel

* When Duck is on the turntable, in the beginning, the turntable bounces back and forth a little when it stops. There is also a gap between his face and the smokebox.
* The front right wheel on the Fat Controller's car is crooked.
* In the scene where Duck is exactly side-on, a small space between the face and the model is visible.
* Henry's tender is missing in the first shot featuring him.
* When Duck and Diesel leave and the other engines start talking, James' leading wheels are derailed.
* When Duck passes James, Gordon, and Henry, there are only two tracks to the right of the |water tower, and it is not in line with the Sodor Shipping Company building. When Diesel and Duck arrive, later on, there are three tracks to the right of the water tower, and it is in line with the building.
* Gordon and Henry's faces are crooked when Duck and Diesel leave.
* When Diesel is on the turntable, there are moments where camera equipment is reflected in the windows.
* When Diesel backs into Tidmouth Sheds, Gordon's eyes are wonky.
* Duck's eyebrows are missing when he and Diesel are frowning at each other; they are also missing when Diesel first backs into the shed.
* Duck is not in the siding when Diesel tries to pull the trucks.
* As the narrator is saying, "The engines were flattered," both Gordon and Henry's eyes are pretty wonky.
* When Diesel loses patience with the trucks and pulls them even harder, the first few trucks are already off the tracks, but when Diesel is still trying to pull them in the next scene, they are not off the tracks.
* Steam can be seen around Diesel when he is trying to move the trucks.
* When the narrator says "Diesel lost patience," one of the trucks has a clump of hair inside it.
* When Diesel tries to push the trucks back, he backs down onto the breakdown train, not the trucks. In the same scene, one of the buffers stops on the left is leaning over.
* In one scene, there is not a truck in the siding that Duck is in before he goes to collect the other trucks. One appears in the siding during the trucks' song, then after it finishes there is not.
* In the scene of Duck seeing Diesel after he collects his trucks, Diesel backs down to the trucks he was struggling with (straight into them), then he comes forward a little so as to be directly in line with Duck. Furthermore, when Duck leaves, he goes backwards suddenly before heading off.
* When Duck runs around to collect his trucks, his eyes jitter a little before he stops to talk to Diesel.
* After Duck leaves to get Gordon's coaches, there is still steam venting from the track.
* When the narrator says "Diesel had to help the workmen clear the mess," the breakdown train is missing one of its buffers. Also, the left buffer is a little chipped.
* Throughout the Knapford Yards and Brendam Warehouse scene sequence, Diesel is missing his eyebrows.
* In a rare picture, Diesel's side rods are crooked.
* Henry's whistle sound is lower-pitched at one point during the scene at Tidmouth Sheds.
* When Diesel first tries to move the trucks, the front truck derails.
* The narrator says that Diesel was delighted to show off, but he is still frowning.
* In the Romansch version, there is a large pause after "revolutionary".
* While Diesel tries to move the trucks, the truck right behind him is a china clay truck, but when he pulls the truck off the track, it appears to be a coal truck.
* Before Duck leaves with some trucks, his handrail is a bit crooked.