Audio problem: At the beginning of the episode, Salty has Diesel's horn sound.
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.
Thomas and the Rainbow - S9-E2
Audio problem: At the beginning, Henry has Gordon's whistle sound.
Audio problem: Gordon has a different whistle sound when he cuts in front of James at the water tower.
Audio problem: At the beginning of the episode, Gordon has Edward's whistle sound.
Rosie's Funfair Special - S12-E3
Audio problem: In the US version, Stepney says "Oh my!", but he doesn't sound shocked and his mouth doesn't match the words. In both US and UK versions: he blows his whistle multiple times, but it only emits steam once, and it sounds like Thomas' at a slightly higher pitch.
Gordon Takes a Shortcut - S12-E15
Audio problem: Stanley has a different whistle sound. His original whistle sound is essentially Thomas' at a lower pitch, but in this episode, it is Thomas' at a higher pitch.
The Biggest Present of All - S13-E16
Audio problem: When Henry and James are at the quarry, their whistle sounds are played out of order.
Audio problem: When Thomas and Butch deliver Rosie's wheel, her whistle sound is at a higher pitch.
Audio problem: When Den and Dart bully Flynn, their voices are swapped.
Kevin's Cranky Friend - S17-E1
Audio problem: James and Henry swap whistle sounds throughout this episode.
Duck and the Slip Coaches - S18-E8
Audio problem: At the beginning, Edward has Thomas' whistle sound.
Audio problem: In the extended Season 19 version of "Engine Roll Call," Henry's whistle sound is out of place as it can be heard during Emily's part of the song. Also, Henry is not mentioned in the Season 22 version of the song, but his whistle sound can still be heard.
Audio problem: When Salty cries "Shiver me axles!" his lips don't match the words.
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.
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.
Answer: Breakdown trains help the engines back on track.