| Yaringa Pastoral Co | - | Carnarvon | Overland | GM ● 2 | Gascoyne Minilya Road Board | 1927-28 |
| Yarloop Dairy Co | - | Yarloop | Chevrolet Truck | H ● 88 | Harvey Road Board | 1927-28 |
| Yarragadee-Nalbarra Co | - | Mingenew | Dodge Truck | MI ● 20 | Mingenew Road Board | 1926-27 |
| Yarragadee-Nalbarra Co | - | Mingenew | Dodge | MI ● 43 | Mingenew Road Board | 1926-27 |
| Yarragadee-Nalbarra Co | - | Mingenew | Dodge truck | MI ● 20 | Mingenew Road Board | 1927-28 |
| Yarragadee-Nalbarra Co | - | Mingenew | Dodge | MI ● 43 | Mingenew Road Board | 1927-28 |
| Yarragadee-Nalbarra Pastoral Co | - | Mingenew | Trailer | MI ● 108 | Mingenew Road Board | 1927-28 |
| Yarrie Station | - | - | Rugby | MB ● 12 | Marble Bar Road Board | 1927-28 |
| Yate | A. | 129 Roberts Road, Subiaco | Excelsior & Sidecar | 765 | Metro Motorcycle | 1922-23 |
| Yates | A. E. | Marradong | Ford | MR ● 22 | Marradong Road Board | 1923-24 |
| Yates | A. R. | Kojonup | D.F. P. Lorry | KO ● 82 | Kojonup Road Board | 1926-27 |
| Yates | A. R. | Kojonup | Ford | KO ● 141 | Kojonup Road Board | 1927-28 |
| Yates | A. R. | Kulikup | Ford | BU ● 128 | Upper Blackwood Road Board | 1927-28 |
| Yates | C. | Bridgetown | Ford Truck | B ● 158 | Bridgetown Road Board | 1926-27 |
| Yates | C. | Bridgetown | Ford Truck | B ● 158 | Bridgetown Road Board | 1927-28 |
| Yates | C. H. | Kojonup | Chevrolet | KO ● 53 | Kojonup Road Board | 1925-26 |
| Yates | C. H. | Kojonup | Chevrolet | KO ● 53 | Kojonup Road Board | 1926-27 |
| Yates | C. H. | Kojonup | Chevrolet | KO ● 53 | Kojonup Road Board | 1927-28 |
| Yates | C. T. | Bridgetown | Ford | B ● 167 | Bridgetown Road Board | 1927-28 |
| Yates | Chas. S. S. | 441 Rokeby Road | - | S 48 | Subiaco Municipality | 1916 |
| Yates | Dr W. P. | Busselton | Overland | BN 17 | Busselton Municipality | 1922-23 |
| Yates | Dr W. P. | Busselton | Dodge | BN 17 | Busselton Municipality | 1924-25 |
| Yates | E. | Pickering Brook | Ford | DR ● 79 | Darling Range Road Board | 1925-26 |
| Yates | E. | Pickering Brook | Ford | DR ● 79 | Darling Range Road Board | 1926-27 |
| Yates | E. | Southern Cross | Ford | YL ● 52 | Yilgarn Road Board | 1926-27 |
| Yates | Fanny (Mrs) | Wuraming | Ford | MR ● 10 | Marradong Road Board | 1923-24 |
| Yates | G. | Mount Barker | Buick | PL ● 87 | Plantagenet Road Board | 1927-28 |
| Yates | H. D. | Kojonup | Overland | KO ● 55 | Kojonup Road Board | 1927-28 |
| Yates | H. O. | Kojonup | Overland | KO ● 55 | Kojonup Road Board | 1926-27 |
| Yates | J. A. | Box 76, G.P.O., Perth | Triumph 3½ H.P. Motorcycle | P 1253 | Perth Municipality | 1919 |
| Yates | J. M. | Capel River | Ford Truck | CP ● 21 | Capel Road Board | 1925-26 |
| Yates | J. M. | Capel RIver | Ford Truck | CP ● 21 | Capel Road Board | 1926-27 |
| Yates | J. M. | Capel | Ford | CP ● 21 | Capel Road Board | 1927-28 |
| Yates | J. M. | Capel | Singer | CP ● 34 | Capel Road Board | 1927-28 |
| Yates | J. P. | Mount Hardey | Ford 19 H.P. | Y ● 3 | York Road Board | 1922-23 |
| Yates | J. P. | Mount Hardey, York | Ford 19 H.P. | Y ● 3 | York Road Board | 1923-24 |
| Yates | J. P. | Mount Hardey | Chevrolet | Y ● 3 | York Road Board | 1924-25 |
| Yates | J. P. | Mount Hardey | Chevrolet | Y ● 3 | York Road Board | 1925-26 |
| Yates | J. P. | Mount Hardey | Chevrolet | Y ● 3 | York Road Board | 1926-27 |
| Yates | J. P. | Mount Hardey | Chrysler | Y ● 3 | York Road Board | 1927-28 |
| Yates | J. P. | Mount Hardey | Chevrolet | Y ● 167 | York Road Board | 1927-28 |
| Yates | J. W. | 105 Alma Street, Fremantle | Dodge | 3011 | Metro Hire or Trade | 1926-27 |
| Yates | Mrs F. | Wuraming | Ford | MR ● 10 | Marradong Road Board | 1924-25 |
| Yates | Mrs F. | Wuraming | Ford | MR ● 10 | Marradong Road Board | 1925-26 |
| Yates | Mrs F. | Wuraming | Ford | MR ● 10 | Marradong Road Board | 1926-27 |
| Yates | Mrs F. | Wuraming | Ford | MR ● 10 | Marradong Road Board | 1927-28 |
| Yates | Mrs F. | Wuraming | Oldsmobile | MR ● 56 | Marradong Road Board | 1927-28 |
| Yates | O. C. | Kojonup | Ford | KO ● 56 | Kojonup Road Board | 1923-24 |
| Yates | O. C. | Kojonup | Ford | KO ● 56 | Kojonup Road Board | 1924-25 |
| Yates | O. C. | Kojonup | Ford | KO ● 56 | Kojonup Road Board | 1925-26 |
