Chuggington (2008)

Season 1: Episode 3

Wilson and Koko are having loads of fun racing each other - until Wilson damages his wheel! He's scared of going to the repair shed to get it checked out, so he tries to put on a brave face and ignore the problem - despite Koko and Brewster's protests. When he gives Felix the Farmer and his churns of fresh cream a ride to the market, Wilson's condition worsens.