The Sodor Dieselworks is the Diesel equivalent of the Sodor Steamworks.
When it was introduced, the Dieselworks was run down and shabby, with insufficient and damaged equipment. After a fire broke out in the main building, it was rebuilt. The company's logo is a picture of a Diesel similar to Den's class, which is painted on the sides of their locomotives.
According to a magazine article, Dennis lives here as well.
The site of the Dieselworks consists of:
- An elevating turntable
- A crane named Happy Hook
- A set of lifting jacks
- An on-site smelting department
- A five-road shed to accommodate the Diesels
- A special shed for Diesel 10
- A giant vice
- The Dieselworks is located in a desert-like area of Vicarstown.