The Christmas Coffeepot - S20-E12
Audio problem: When Glynn says "Oh dear!" his mouth doesn't move.
The Christmas Coffeepot - S20-E12
Audio problem: In the US version, Glynn says "Oh, what? What? Ooh, it's you again..." but in the UK version, the line is omitted. As a result, his eyes move as he is saying something. However, the line is not absent on most UK versions of the episode on YouTube.
Revealing mistake: When Samson crosses the Vicarstown Bridge, there is no shadow effect on his face.
Continuity mistake: Sir Handel was just near the turntable when Samson approaches the Blue Mountain Quarry, but a few shots later, Sir Handel has moved to a siding.
Revealing mistake: Max's wheels can be seen moving backwards when he is actually driving forwards. Also, both Max and Monty's steering and wheel speeds are out of sync with their movements. These events happen throughout the episode.
Continuity mistake: Thomas appears to be damaged and dirty after his accident but in the final scene, he is undamaged and clean.
Other mistake: Oliver's arm is too tall to fit under the bridge.
Other mistake: Thomas has two side rods when he crashes into the pile of dirt. The duplicated side rod moves even though Thomas' brakes are applied.
Other mistake: In the very first shot of Spencer, his coaches aren't textured.
Factual error: At the beginning of the episode, the narrator says that Connor and Caitlin are faster than Spencer, but Spencer, an LNER A4, holds the world speed record for steam locomotives.
Other mistake: In the Family Jr. airing, Davey Moore is not credited for writing the episode; Andrew Brenner is. This mistake was fixed in the UK airing.
Audio problem: After Rex is hoisted back on the rails, Mike has Rex's whistle sound.
Springtime for Diesel - S21-E1
Audio problem: Trevor has Stanley's whistle sound when he crosses the level crossing.
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.
The Great Little Railway Show - S24-E3
Continuity mistake: In one scene, Rex disappears and is replaced with Mike.
Cleo the Road Engine - S24-E17
Continuity mistake: Thomas' brake van changes design. From a black one, then to an orange one.
Thomas' Animal Friends - S24-E20
Continuity mistake: When Thomas passes by Crovan's Gate, James' side appears to be silver.
Other mistake: No shadows are reflected under Percy's flatbeds after his accident with Edward.
Answer: He was in the water.