The Diesel Dilemma will be the tenth episode of the seventeenth season of Thomas and Friends.



  • Thomas
  • Gordon
  • Percy
  • Rosie
  • Diesel
  • Mavis
  • Salty
  • Arry and Bert
  • Splatter and Dodge
  • Sidney
  • Paxton
  • Norman
  • The Fat Controller
  • Farmer McColl
  • Rocky (does not speak)
  • Henry (cameo)
  • James (cameo)
  • Emily (cameo)
  • Charlie (cameo)
  • Flynn (cameo)
  • Bertie (cameo)
  • Veeshol (cameo)
  • Dowgar Hatt (cameo)
  • Stephen Hatt (cameo)
  • Brighet Hatt (cameo)
  • Schoolchildren (cameo)

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