The Ultimate Diesel Guide is a booklet about the diesels on the Island of Sodor.
Characters
- Thomas
- Gordon
- Percy
- Duck
- Bill and Ben
- Emily
- Diesel
- Daisy
- BoCo
- Mavis
- Derek
- 'Arry and Bert
- Diesel 10
- Salty
- Dennis
- Den
- Dart
- Norman
- Paxton
- Sidney
- Rusty
Trivia
- The book was given away at Day Out with Thomas events and with DVDs in the UK and US. It was also available online.
- For unknown reasons, The Diesel, Splatter and Dodge were not included.
Goofs
- On the front cover, Salty's bufferbeam is not weathered.
Gallery
Dennis
Norman
Dart
Diesel 10
Den
Diesel
Mavis and Emily
Diesel and Duck
Diesel in the yards
Duck and Diesel
Salty
Thomas and Dennis
Thomas
'Arry and Bert
Sodor
Mavis
Skarloey and Rusty
