Main Page

“I’m full of surprises!”
This article features MAJOR spoilers for a recently-released or soon-to-be released product. Caution is advised.

Diesel Do Right is the ninth episode of the twenty-third series.


When Diesel gets cross, he decides to get the other diesels into trouble by sending Rebecca to do their jobs, badly, but Diesel's trick is found out at the end.



Voice Cast



  • Joseph May as Thomas
  • Kerry Shale as Diesel
  • Keith Wickham as Salty, Den, Norman, Skarloey and Sir Topham Hatt
  • Steven Kynman as Dart, Paxton and Peter Sam
  • Bob Golding as Sidney
  • Rachael Miller as Rebecca
  • Tom Stourton as Terence
  • Miranda Raison as Millie
  • Rasmus Hardiker as Philip


  • The title is likely a reference to the cartoon Dudley Do Right.
  • Diesel's fantasy sequence is a parody of the current intro from Series 22 onwards.
  • Apart from Thomas reading the title aloud, this episode does not include any narration.
  • This episode marks the first of a few things:


  • Throughout the fantasy sequence, the Dieselworks is miscoloured purple.
Community content is available under CC-BY-SA unless otherwise noted.