Season 8 first aired on June the 1st 2015.
- I Spy with my Little Eye - There is more play and less work amongst the engines.
- James and the Cheese - James is less than impressed to be taking cheese to market.
- Whirly and Windy - Oliver gets too hot.
- The Balloon Race - The Wellsworth Cub Scouts have a balloon race.
- A Puzzle for Percy - Percy has a top-secret job.
- The Greenhouse Bus! - Bulgy is tired of being a henhouse.
- James' Hotel! - James breaks down outside a hotel.
- The Runaway Percy - Percy is afraid of being scrapped.
- The Scarecrow Competition! - A farmer needs help.
- Duck meets Duck - Duck has a duck for a friend.
- Rhyming Engines - Rhymes are made amongst the engines.
- Tunnel Trouble - S. C. Ruffey pretends to be ill.
- Trevor's Present - Thomas discovers that Trevor is lonely.