Since when was there a loco in peppa pig?

I made my research looking at locomotives cause i came to the thought this loco is a hybrid so i searched some locomotives and found a J36 0-6-0 which would have been used ofr the cab and the rest maybe from a FAT engine, shortened the boiler and slaped it in there, and in the series the locomotive doesnt have any steam pipes, only gears and doesnt have a firebox, it isnt a diesel cause it throws steam the dame way as a steam locomotive so it maybe a steampunk though it doesnt need a firebox which is strange, maybe its a steampunk by how it moves with a ton of gears or another type that uses other techniques

a whole ass clockwork locomotive shaped like an engine got replaced by a tractor with trailers😭

Plus its castle not caatle