Visible crew/equipment: When James enters the station, a camera shadow is visible.
Continuity mistake: When Gordon hits the apples, he just bangs into them, no damage, but in the next shot, the apples are visible and smashed and the cart is crushed and on its side.
Plot hole: Bulgy is seen in his season 3 paint job, but in Bulgy Rides Again he's a veggie bus.
Visible crew/equipment: When Murdoch puffs by a field, a stage light is reflected off the coach's windows.
Deliberate mistake: When Thomas goes by the level crossing, a close up of Thomas is shown but it's the same footage from season 1, only flipped. Because of this, Thomas' number is mirrored.
Visible crew/equipment: When the banner hits Gordon, in the next shot, a scaffold is very visible in the trees on the right. (Visible in Wide screen version only).
Character mistake: The narrator says that Rusty chuffed bravely across the bridge, but Rusty is a Diesel and thus cannot chuff.
Other mistake: When the narrator says that Duncan ran out of coal in the bridge, there is coal in his bunker.
Factual error: In the "Steamie or Diesel" game on the "All Aboard with the Steam Team" DVD, Spencer is incorrectly called a diesel even though he is a steamie. Whenever you get the wrong button, Spencer says he actually has a horn instead of a whistle and even says he is a diesel engine.
Character mistake: At the beginning, the narrator refers to the Quarry as the Smelters.
Audio problem: At the beginning of the episode, Salty has Diesel's horn sound.
Revealing mistake: Salty is missing his rear lamp in the first shot at the docks and a hole is visible where it should be.
Visible crew/equipment: When Percy passes the Coaling plant, a camera shadow is visible.
Audio problem: Before Emily goes into the duck pond, her brakes are heard screeching but her wheels are still moving.
Audio problem: At the beginning, Henry has Gordon's whistle sound. And when Spencer's driver rings the bell after stopping at the countryside, the bell is heard, but cannot be seen.
Deliberate mistake: In the PBS airings in the U.S. of "Tuneful Toots" and "Duncan and the Old Mine", Rusty is referred to as a female rather than a male.
Thomas and the Rainbow - S9-E2
Audio problem: At the beginning, Henry has Gordon's whistle sound.
Plot hole: When Gordon crashes into the goods train, it is not being pulled by an engine. So why is it just sitting on the mainline and not on a siding?
Audio problem: Gordon has a different whistle sound when he cuts in front of James at the water tower.
Character mistake: The narrator refers to Gordon as "Gordon's engine."
Answer: Butch the breakdown truck must have pulled Gordon's tender all the way up the rails so the breakdown train can reach it and also Butch helped to get Gordon close to the winch.