Season 4
Episodes
1 Rescue at Rocky Ridge Aug 26, 2013 2 Wilson's Forest Flare Aug 26, 2013 3 Stop Koko Stop Aug 27, 2013 
4 Runaway Koko Aug 28, 2013 5 Brewster Makes Tracks Aug 29, 2013 6 Chief Wilson Aug 30, 2013 7 Back Up Brewster Sep 13, 2013 8 Track Laying Brewster Oct 1, 2013 
9 Explorer Koko Oct 2, 2013 10 The Old Silver Mine Line Oct 3, 2013 
11 Brewster Leads The Way Oct 4, 2013 
12 Park Patroller Wilson Oct 5, 2013 
13 High Rise Rescue Oct 6, 2013 
14 Winter Whiteout Jan 2, 2014 
15 Snow Patrol Jan 3, 2014 
16 Fearless Wilson Apr 7, 2014 17 Special Rescue Team Apr 8, 2014 
18 Deputy Chug Patrollers Apr 9, 2014 19 Blazin' Wilson Apr 10, 2014 20 On Track Brewster Apr 11, 2014 21 We Are the Chuggineers Apr 21, 2014 22 Team Trainee Apr 22, 2014 23 Record Breaker Koko Apr 23, 2014 24 Tootington Tunnel Apr 17, 2014 
25 Iron Chuggers Apr 18, 2014 26 Roundup Wilson Apr 21, 2014
4 Runaway Koko Aug 28, 2013 5 Brewster Makes Tracks Aug 29, 2013 6 Chief Wilson Aug 30, 2013 7 Back Up Brewster Sep 13, 2013 8 Track Laying Brewster Oct 1, 2013 9 Explorer Koko Oct 2, 2013 10 The Old Silver Mine Line Oct 3, 2013 11 Brewster Leads The Way Oct 4, 2013 12 Park Patroller Wilson Oct 5, 2013 13 High Rise Rescue Oct 6, 2013 14 Winter Whiteout Jan 2, 2014 15 Snow Patrol Jan 3, 2014 16 Fearless Wilson Apr 7, 2014 17 Special Rescue Team Apr 8, 2014 18 Deputy Chug Patrollers Apr 9, 2014 19 Blazin' Wilson Apr 10, 2014 20 On Track Brewster Apr 11, 2014 21 We Are the Chuggineers Apr 21, 2014 22 Team Trainee Apr 22, 2014 23 Record Breaker Koko Apr 23, 2014 24 Tootington Tunnel Apr 17, 2014 25 Iron Chuggers Apr 18, 2014 26 Roundup Wilson Apr 21, 2014