| Class |
Max No. of class |
Currently |
| 1961 - Tas Y Class (Diesel-electric) | 2 | 0 |
| 1964 - Tas DQ Class (Diesel-electric) | 12 | 12 |
| 1971 - WAGR D Class (Diesel-electric) | 2 | 0 |
| 1973 - Tas Z Class (Diesel-electric) | 4 | 0 |
| 1973 - Tas Za Class (Diesel-electric) | 5 | 0 |
| 1973 - Tas ZB Class (Diesel-electric) | 4 | 0 |
| 1978 - NZR DC Class (Diesel-electric) | 1 | 0 |
| 1978 - QR 2050 Class (Diesel-electric) | 4 | 0 |
| 1988 - Tas ZC Class (Diesel-electric) | 4 | 0 |
| 1994 - MKA Class (Diesel-electric) | 6 | 0 |
| 1995 - Tas ZR Class (Diesel-electric) | 2 | 0 |
| 1997 - Tas QR Class (Diesel-electric) | 3 | 0 |
| 1997 - Tas ZP Class (Diesel-electric) | 1 | 0 |
| 2001 - Tas DV Class (Diesel-electric) | 1 | 1 |
| 2013 - Tas TR Class (Diesel-electric) | 17 | 17 |