The first successful railcars of the Victorian Railways were built between 1922 and 1925 on chassis provided by Associated Equipment Company, hence the name “AEC Railcars”. The 19 vehicles built were powered by a 45 hp petrol engine and additionally there were 24 trailers. The railcars were built with four different interior layouts which provided either 32 first class seats, 37 second class seats or combinations of both. In World War II, some were equipped with a gas generator to save petrol. They remained in service until the fifties when they were replaced by Walker Railmotors. 