| Steer | J. H. | Corrigin | Chevrolet | CR ● 154 | Corrigin Road Board | 1926-27 |
| Steer | Mrs E. | Wallsend Street, Collie | Overland | CM 168 | Collie Municipality | 1926-27 |
| steer | W. | Muchea | Ford Wagon | CH ● 43 | Chittering Road Board | 1926-27 |
| Steer | W. | Muchea | Ford Wagon | CH ● 43 | Chittering Road Board | 1927-28 |
| Steer | W. | Augusta | Chevrolet | AU ● 108 | Augusta Road Board | 1927-28 |
| Steere | E. | River Avenue, Collie | Ford | CM 48 | Collie Municipality | 1924-25 |
| Steere | E. | River avenue, Collie | Ford | CM 48 | Collie Municipality | 1925-26 |
| Steere | E. Lee | Belele Station | Ford 20 H.P. | MK 13 | Meekatharra Road Board | 1919 |
| Steere | E. M. | Shotts | Overland | CO ● 56 | Collie Road Board | 1925-26 |
| Steere | E. M. | Shotts | Overland | CO ● 56 | Collie Road Board | 1926-27 |
| Steere | F. A. | Dudinin | Dodge | KU ● 35 | Kulin Road Board | 1926-27 |
| Steere | F. A. | Dudinin | Dodge | KU ● 35 | Kulin Road Board | 1927-28 |
| Steere | F. W. | Bunbury | Bunbury | BY 70 | Bunbury Municipality | 1926-27 |
| Steere | F. W. | Bunbury | Ford | BY 70 | Bunbury Municipality | 1927-28 |
| Steere | Lee E. | Mount Street, Perth | Dodge | 199 | Metro Private Car | 1926-27 |
| Steere | Lee E. | Mount Street | Dodge 20 H.P. | P 1001 | Perth Municipality | 1917-18 |
| Steere & Leeds | - | Wandinnie,via Mullewa | Ford 20 H.P. | MW ● 4 | Mullewa Road Board | 1917-18 |
| Steere & Leeds | - | Wandinnie via Mullewa | Ford 20 H.P. | MW 4 | Mullewa Road Board | 1919 |
| Steere & Sons | - | Dudinin | Ford | RE ● 27 | Roe Road Board | 1925-26 |
| Steere & Sprigg | Lee | Belele | Dodge 18-22 H.P. | MK ● 10 | Meekatharra Road Board | 1917-18 |
| Steere & Sprigg | Lee | Belele Station | Triumph 3 H.P. Motorcycle | MK ● 1 | Meekatharra Road Board | 1917-18 |
| Steeton & Co | John | 6 Mackie Street, Victoria Park | Republic Wagon | 3644 | Metro Hire or Trade | 1925-26 |
| Stefanoni | A. | The Ledge" Bibra Lake | Ford Wagon | 12219 | Metro Private Car | 1926-27 |
| Stehn | H. | Pinjarra | Fiat | MY ● 210 | Murray Road Board | 1926-27 |
| Stehn | H. A. | Criterion Hotel, Perth | Fiat | 1402 | Metro Private Car | 1927-28 |
| Stehn | N. | 87 Trafalgar Street, East Perth | Ford Wagon | 10026 | Metro Hire or Trade | 1925-26 |
| Steick | J. B. | Porongorups, via Mount Barker | Studebaker | PL 15 | Plantagenet Road Board | 1916 |
| Steick | T. A. | Porongorups | Studebaker | PL ● 15 | Plantagenet Road Board | 1924-25 |
| Steicke | J. B. | Mount Barker | Studebaker 20 H.P. | PL ● 15 | Plantagenet Road Board | 1917-18 |
| Steicke | J. B. | Mount Barker | Studebaker 20 H.P. | PL ● 15 | Plantagenet Road Board | 1919 |
| Steicke | J. B. | Mount Barker | Studebaker 20 H.P. | PL ● 15 | Plantagenet Road Board | 1922-23 |
| Steicke | J. B. | Mount Barker | Studebaker 20 H.P. | PL ● 15 | Plantagenet Road Board | 1923-24 |
| Steicke | J. H. | Katanning | Ford | KA ● 265 | Katanning Road Board | 1926-27 |
| Steicke | J. H. | Katanning | Ford | KA ● 265 | Katanning Road Board | 1927-28 |
| Steicke | T. A. | Mount Barker | Studebaker | PL ● 15 | Plantagenet Road Board | 1924-25 |
| Steicke | T. A. | Porongorups | Studebaker | PL ● 15 | Plantagenet Road Board | 1925-26 |
| Steicke | T. A. | Mount Barker | Studebaker | PL ● 93 | Plantagenet Road Board | 1927-28 |
| Steicke | V. B. | Mount Barker | Rugby | PL ● 147 | Plantagenet Road Board | 1927-28 |
| Steik | W. G. | Victoria Avenue, North Fremantle | Ford | 1607 | Metro Private Car | 1926-27 |
| Stein | F. | Nicholson Road, Canning Vale | Chevrolet | 5988 | Metro Private Car | 1927-28 |
| Stein | S. M. | Kathleen Street | Dodge Bros. 20 H.P. | Ce 25 | Cottesloe Municipality | 1916 |
| Stein | S. M. | Kathleen Street | Overland 20 H.P. | Ce ● 22 | Cuballing Road Board | 1917-18 |
| Stein | S. M. | 79 Grosvenor Road | Overland 19½ H.P. | P 1159 | Perth Municipality | 1919 |
| Stein | S. M. | 76 Grosvenor Road | Grand 10 H.P. | P 1288 | Perth Municipality | 1919 |
| Stein | S. M. | 718 Beaufort Street, Mount Lawley | Chevrolet | 981 | Metro Private Car | 1922-23 |
| Stein | S. M. | 113 Barrack Street, Perth | Dodge | 4272 | Metro Private Car | 1923-24 |
| Stein | S. M. | 113 Battack Street, Perth | Buick | 6428 | Metro Private Car | 1924-25 |
| Stein | S. M. | 113 Barrack Street, Perth | Buick | 6428 | Metro Private Car | 1925-26 |
| Steinfield | G. | East Cannington | Overland | 9224 | Metro Private Car | 1926-27 |
| Steinfield | G. | East Cannington | Overland | 9224 | Metro Private Car | 1927-28 |
