|This article is about the Story Library book. You may be looking for the traction engine.|
Fergus, retitled Fergus the Good Little Engine in 2011 and Thomas' Good Advice in 2015, is the thirty-sixth book in the My Thomas Story Library series.
Fergus helps Mavis, Bill, and Ben at the quarry. The twins are fed up with Fergus telling them what to do, so they plan a trick. The trick backfires and Fergus is soon up to his funnel in rocks.
- Fergus has black buffers instead of bronze.
- In two illustrations, Bill and Ben's saddle tanks say "CCS" instead of "SCC".