The railway has 9 passenger coaches in total (No 3 has been converted), 6 of which are available for service:
| No | Built By | Year | Seats | Description |
| 1 | Severn Lamb | 1972 | 36 | Originally built as a open 'Toastrack' carriage for the opening of the railway. Rebuilt in 1997/8 with wooden panelled sides and a higher roof. |
| 2 | Severn Lamb | 1972 | 36 | Originally built as a open 'Toastrack' carriage for the opening of the railway. In the process of a rebuild to match carriage No 1. |
| 3 | MFD Engineering | 1973 | 42 | The chassis of carriage No 3 has been converted to the new 'Catoflat' vehicle. |
| 4 | MFD Engineering | 1974 | 36 | Built with a small guards compartment; awaiting refurbushment. |
| 5 | MFD Engineering | 1976 | 36 | Built with a small guards compartment. Refurbished in 1998/9. |
| 6 | Gwynedd Engineering Services | 1979 | 30 | Closed, with end doorways and a central corridor. |
| 7 | Gwynedd Engineering Services | 1979 | 30 | Closed, with end doorways and a central corridor. |
| 8 | Gwynedd Engineering Services | 1981 | 24 | Closed, with end doorways, a central corridor and guards' compartment. |
| 9 | Gwynedd Engineering Services | 1982 | 46 | Semi-open, with end doorways and a central corridor. The body is awaiting refurbishment. |
| 10 | Gwynedd Engineering Services | 1982 | 46 | Semi-open, with end doorways and a central corridor. The body has been refurbished by the railway. |
Until recently, the railway boasted a wide variety of goods wagons that were mainly in private ownership. A large proportion of this stock has been sold and the railway is now constructing it's own fleet of goods wagons, the most recent of which is a large coal bogie wagon and the 'Catoflat' utility vehicle that was constructed using the chassis from carriage No 3.
![]() |
The new "CaToFlat" wagon (part Carriage, part Tool van, part Flat wagon) basks in the sunlight in Llanuwchllyn station yard. |
![]() |
The first of the new coal wagons stands outside the carriage shed at Llanuwchllyn. The second is now completed and work will shortly begin on the construction of a third. |