Other mistake: In the distant shot of Vicarstown, the station is missing its letters.
Revealing mistake: Before James collides with the tar tankers, he is already covered in tar before he actually hits them.
Thomas the Tank Engine & Friends (1984)
2 mistakes in season 23 - chronological order
Starring: Alec Baldwin, Michael Brandon, Ben Small, Martin Sherman, Michael Angelis
Duke: Excuse me. Are you a vandal? Driver told me vandals smash and break things.
Thomas' Christmas Party - S1-E26
Trivia: At the end, the podium on which The Fat Controller is standing, is made of LEGO bricks.
Question: How did they get the broken down train at the scene of the crash without any calls?
Answer: Breakdown trains help the engines back on track.