The Ultimate Diesel Guide is a booklet about the diesels on the Island of Sodor.
Characters
The Railway Series
- Thomas
- Gordon
- Duck
- Bill or Ben
- Diesel
- Daisy
- BoCo
- Skarloey
- Rusty
- Troublesome Trucks
- Troublesome Vans
- Cora
Thomas & Friends
- Thomas
- Henry
- Gordon
- Percy
- Duck
- Emily
- Bill and Ben
- Belle
- Diesel
- Daisy
- BoCo
- Mavis
- Derek
- 'Arry and Bert
- Diesel 10
- Salty
- Dennis
- Sidney
- Norman
- Paxton
- Den
- Dart
- Flynn
- Rusty
- Big Mickey (faceless)
- Cranky (map cameo)
Locations
The Railway Series
Thomas & Friends
- Brendam Docks
- Elsbridge Engine Sheds
- Ffarquhar Quarry
- Knapford
- Sodor Airport
- The Lumber Mill
- Bridge over Single-Track Tunnel Runby (map only)
- Callan Castle (map only)
- McColl Farm (map only)
- Tower Windmill (map only)
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.
- This book is inspired by the movie Day of the Diesels.
- For unknown reasons, Class 40, Splatter and Dodge are not included.
- This book reveals Dennis and Norman are twins.
Goof
- On the front cover, Salty's bufferbeam is not weathered.