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“I sometimes wonder, Nia, if it might be easier to be useful if Diesel wasn't around.”

Diesel Glows Away is the twentieth and final episode of the twenty-third series.


When Diesel hides from the other engines, his plans backfire and he gets a surprise on Sodor.





US and CAN

  • Joseph May as Thomas
  • Kerry Shale as Diesel
  • Yvonne Grundy as Nia
  • Steven Kynman as Paxton
  • Rob Rackstraw as Stanley and Owen
  • Keith Wickham as Den and Norman


  • Going by production order, this is the twelfth episode of the twenty-third series.
  • This episode marks Owen's first speaking role since the eighteenth series episode, Long Lost Friend and the first time he is voiced by Rob Rackstraw. This is also his only speaking role in the twenty-third series.
  • This episode marks Stanley's only speaking role in the twenty-third series, albeit only in a fantasy sequence. On top of that, Rob Rackstraw voices him in the UK dub instead of Matt Wilkinson.
  • This marks the last of several things:
  • This episode marks the third time Thomas does not appear in a series finale episode, the first was the sixth series episode, Faulty Whistles and the second was the eleventh series episode, Wash Behind Your Buffers.
  • The paint that Diesel used in this episode is also seen in the twentieth series episode, Henry in the Dark.
  • On the Nick Jr. US airing of this episode, it was paired with Wish You Were Here.
  • In the Dutch dub, the Let's Dream song was played an instrumental version for the end song.


  • Diesel, Nia and Paxton travel on narrow gauge track in the tunnel at the Blue Mountain Quarry despite all being standard gauge engines.
  • Stanley has his US voice in the UK dub. Despite that, Matt Wilkinson is still listed as his voice actor in the UK credits.
  • In the Latin American Spanish dub, Nia's line when she thanks Owen is left silent.

In Other Languages

Language Title
Brazilian Portuguese Diesel Brilhante
Dutch Diesel is er Gloeiend bij
Estonian Diiseli Hiilgus
Finnish Diesel Hehkuu
German Diesel wünscht sich was
Greek Ο Ντίζελ φωσφορίζει
Indonesian Diesel Yang Bersinar
Italian Diesel Fosforescente
Japanese あやしくひかるディーゼル
Korean 꿈속의 디젤
Latin American Spanish Diesel el Brillante
Latvian Dīzelis Spīd
Lithuanian Dyzelis švyti Tamsoje
Polish Diesel Świeci
Russian Исчезнувший Дизель
Spanish Diesel Llamando la Atención

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