Season 4

Wilson saves Koko from a collapsing mine, proving that he is the brave new hero of the rails.

When Emery breaks down in the forest, it's Chug Patroller Wilson to the rescue.

Koko learns to use how to brake at high speeds and Brewster learns that he has a good eye for track-laying.

Brewster tells Koko and Wilson that he is making ballast with Speedy McAllister. Koko then goes to practise with Hanzo, she practises letting go of her carriages in emergencies.

The Chuggineers demolish an old cooling tower and Brewster cannot wait to see it come down, but an urgent job means he may miss the explosion.

Wilson's new Chug Patrol skills are put to the test, but things go awry when he forgets something important.

Zack becomes trapped when an old rickety bridge collapses, prompting Brewster to use all his craning skills to lift him safely out of the high tunnel.

Zack, Tyne, and Fletch get stranded by some washed out tracks due to a heavy flash flood.

Koko takes some very important visitors including the mayor on a tour.

Brewster and Koko get stranded on the opposite side of a broken track that the Chuggineers are repairing.

Brewster must take the mining equipment to the site, but when his pulling team is taken away, he will need to find a way to help his replacements

Wilson helps out when Old Puffer Pete goes sleep-riding around Chuggington.

Hodge gets stuck high up in the air, but Wilson's clever thinking saves the day.

The chuggers make preparations for the Winter Parade through Chuggington.

Fletch is trapped in a snowdrift in the mountains and Wilson must rescue him!

When Brewster slips into the river, Wilson must act super-fast and help his friend.

The Chug Patrollers rescue Eddie from the side of a bridge using a banner as a sling.

When he runs out of Water, Wilson has to think on his wheels during fire training.

When he runs out of Water, Wilson has to think on his wheels during fire training.

Brewster has his first chuggineer test and Wilson is on Safety Patrol.

Something goes wrong when the chuggineers are building a bridge.

The Speed Fleet, Chug Patrol and the Chuggineers compete in the Track Dash fun race.

Koko tries to break a speed record at the Chug-a-Sonic Speedtrack.

Brewster and Cormac chase a runaway circular tunnel entrance through the countryside.

The Chuggineers compete with the Steam Team for the coveted Iron Chuggers title

During training, Wilson and Chug Patrol must evacuate animals from the Safari Park.