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Don't Go Back

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This article is about the episode. You may be looking for the board book.
"Steamies are fast, Steamies are first!"
— Thomas

Don't Go Back is the fourteenth episode of the twelfth season.


Thomas and Diesel are to load and shunt trucks of stone for Henry, but they get sidetracked when Diesel claims Diesels are faster than steam engines - and declares a backwards race to prove it. Unfortunately, the three heats (which end in a draw) cause Mavis, 'Arry, and Bert to be derailed after Thomas and Diesel collides with them. When Henry arrives, none of the trucks have been loaded. While Thomas arranges the train and collects Rocky to put Mavis, 'Arry, and Bert back on the rails, Diesel clears away the mess from the races. When the two are done, Diesel challenges Thomas to another race, which Thomas orders to be forward. This time, both arrive at the quarry gates at the same time.




  • Stock footage from Hector the Horrid! and The Great Discovery is used.
  • In the last race, a workman can be seen holding a racing flag.
  • A third rail is used to make Mavis come off the tracks.
  • After crashing through the shed, Diesel says "Oh No!" in the UK narration, but says "Uh Oh!" in the US.


  • Diesel blows steam from his cab when he and Thomas shunt the trucks of rubble and wood.
  • 'Arry and Bert are missing their stubble on their CGI faces. Their faces are also considerably smaller than usual.
  • Diesel's wheels do not go round as he reverses away from the hopper.
  • Right before Thomas and Diesel crash into 'Arry and Bert, one of the twin's eyes are wonky.
  • When Thomas tells Henry that his train "will so be ready," his CGI face isn't proportioned correctly.

In Other Languages

Language Name Meaning
French La Compétition / Ne Pas Revenir (Québec) The Competition / Don't Go Back (Canada)
Italian Vietato Correre All'Indietro Forbidden Racing Backwards!
Spanish A No Retroceder No Going Backwards
Czech Prozpátku Ne Not Backwards
Portuguese Não Anda Para Trás Goes Not Backward
Indonesian Jangan Mundur Never Backward
Polish Jazda Tyłem Driving Backwards
Dutch Niet Terug Not Back
Flemish Niet Gaan Terug Don't Go Back
German Nicht Rückwärts Not Backwards
Slovak Pozadu Nie Behind It
Japanese 全く逆転しません (Mattaku Gyakuten Shimasen) No Reversal
Chinese 别倒车 Do Not Reverse
Thai โธมัสแข่งวิ่งถอยหลัง Running Back Thomas

Home Media Releases



Latin American

  • High Speed Adventures

DVD Boxsets



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