Caroline is an old-fashioned car.
When Stepney was visiting Thomas' Branch Line, some cricket players lost their only ball in Stepney's hay truck and roused the old car to wake her up and chase the Bluebell Engine in order to receive their lost ball. However, she broke down when she finally reached Stepney and could not continue. Ultimately, Stepney's driver and fireman forgave the cricket players, and Caroline, and brought the old car back home on a flatbed. Since then, Caroline is always happy when Stepney comes to visit Sodor!
She has been seen with The Thin Controller's Children.
Caroline is old-fashioned, and it shows, but she is willing to help out as long as the heat cooperates! She does not like being pushed too far, as it causes her to overheat. She appreciates the engines on the railway, but would prefer not to race against them!
- Season 1: Dodge (cameo, remastered version only)
- Season 2: Swan Dive (cameo), All the World's a Stage (cameo)
- Season 3: Culdee Fell (cameo), The Suggestion Box (cameo), Penn Pals (cameo), Ice Breaker (cameo), Chivalry is Dead (cameo), Percy and Asbestos (cameo)
- Web Clips: The Fat Controller, the Stationmaster, and the Raiboat - Meet the Characters! (cameo), Thomas the Tank Engine 70th Anniversary Celebration! (cameo), Gina gives Percy some pointers - Meet the Characters! (cameo)