| Mcilwraith McEacharn Ltd | - | Phillimore Street, Fremantle | Buick | 12391 | Metro Private Car | 1927-28 |
| McIndoc | R. H. | Albany | Overland 30 H.P. | A 29 | Albany Municipality | 1915 |
| McIndoe | - | Katanning | Overland 30 H.P. | KRB 29 | Katanning Road Board | 1915 |
| McIndoe | - | Katanning | Overland 30 H.P. | KA 29 | Katanning Road Board | 1916 |
| McIndoe | R. H. | Katanning | Maxwell 20 H.P. | KRB 45 | Katanning Road Board | 1915 |
| McIndoe | R. H. | Katanning | Overland 25 H.P. | A 29 | Albany Municipality | 1916 |
| McIndoe | R. H. | Katanning | Maxwell 20 H.P. | KA 45 | Katanning Road Board | 1916 |
| McIndoe | R. H. | Katanning | Ford 20 H.P. | KA 58 | Katanning Road Board | 1916 |
| McIndoe | R. H. | Katanning | Maxwell 20 H.P. | KA ● 45 | Katanning Road Board | 1917-18 |
| McInerherney | T. P. | Annanda Dale | Ford 20 H.P. | BE ● 49 | Beverley Road Board | 1919 |
| McInerherney | T. P. | Annanda Dale | Ford 20 H.P. | BE ● 49 | Beverley Road Board | 1922-23 |
| McInerherney | T. P. | Annanda, Beverley | Ford | BE ● 49 | Beverley Road Board | 1923-24 |
| McInerney | J. | Forrest Street | Ford | B 82 | Boulder Municipality | 1927-28 |
| McInerney | T. P. | Annanda Dale | Ford | BE ● 49 | Beverley Road Board | 1924-25 |
| McInherney | T. | Dale | Ford | BE ● 49 | Beverley Road Board | 1925-26 |
| McInnes | G. | Southern Cross | Chevrolet Truck | YL ● 9 | Yilgarn Road Board | 1926-27 |
| McInnes | G. | Southern Cross | Ford Truck | YL ● 16 | Yilgarn Road Board | 1926-27 |
| McInnes | J. A. | Wagin | Ford 20 H.P. | W 12 | Wagin Road Board | 1916 |
| McInnes | J. A. | Wagin | Ford 20 H.P. | W ● 12 | Wagin Road Board | 1917-18 |
| McInnes | J. A. | Wagin | Ford 20 H.P. | W ● 12 | Wagin Road Board | 1919 |
| McInnes | J. A. | Wagin | Dodge | W ● 12 | Wagin Road Board | 1923-24 |
| McInnes | J. A. | Wagin | Dodge | W ● 12 | Wagin Road Board | 1924-25 |
| McInnes | J. A. | Wagin | Dodge | W ● 12 | Wagin Road Board | 1925-26 |
| McInnes | J. A. | Wagin | Dodge | W ● 12 | Wagin Road Board | 1926-27 |
| McInnes | J. A. | Wagin | Dodge | W ● 12 | Wagin Road Board | 1927-28 |
| McInnes | J. M. | Tuckanarra | Ford | NN ● 12 | Nanine Road Board | 1923-24 |
| McInnes | J. M. | Tuckanarra | Ford | NN ● 12 | Nannine Road Board | 1924-25 |
| McInnes | J. M. | Tuckanarra | Ford | NN ● 12 | Nannine Road Board | 1925-26 |
| McInnes | J. M. | Tuckanarra | Ford | NN ● 12 | Nannine Road Board | 1926-27 |
| Mcinnes | J. M. | Tuckanarra | Oakland | NN ● 12 | Nannine Road Board | 1927-28 |
| McInnes | Jas. M. | Tuckanarra | Ford | NN ● 12 | Nannine Road Board | 1922-23 |
| McInnes | P. J. | Nungarin | Ford Truck | NA ● 148 | Nungarin Road Board | 1927-28 |
| McInnes | W. | Wogolin | Chevrolet | WK ● 240 | Wickepin Road Board | 1927-28 |
| McIntosh | - | Albany | Rugby | A 99 | Municipality of Albany | 1925-26 |
| McIntosh | - | Fry & Mawley, Bay View Terrace, Claremont | Buick | 965 | Metro Private Car | 1925-26 |
| McIntosh | - | Fry & Mawley, Bay View Terrace, Claremont | Traffic Wagon | 966 | Metro Private Car | 1925-26 |
| McIntosh | - | Fry & Mawley, Bay View Terrace, Claremont | Napier Wagon | 967 | Metro Private Car | 1925-26 |
| McIntosh | - | Albany | Rugby | A 99 | Municipality of Albany | 1926-27 |
| McIntosh | A. | 229 Newcastle Street | Ford 20 H.P. | P 350 | Perth Municipality | 1915 |
| McIntosh | A. | 7 Elms Street | Overland 20 H.P. | P 763 | Perth Municipality | 1916 |
| McIntosh | A. | 7 Elm Street | Overland 20 H.P. | P 763 | Perth Municipality | 1917-18 |
| McIntosh | A. | 234 William Street | Overland 20 H.P. | P 763 | Perth Municipality | 1919 |
| McIntosh | A. | 46 Aberdeen Street, Perth | Hudson | 3123 | Metro Private Car | 1924-25 |
| McIntosh | A. | 46 Aberdeen Street, Perth | Hudson | 3355 | Metro Private Car | 1924-25 |
| McIntosh | A. | 46 Aberdeen Street, Perth | Hudson | 3355 | Metro Hire or Trade | 1925-26 |
| Mcintosh | A. | 46 Aberdeen Street, Perth | Hudson | 3355 | Metro Hire or Trade | 1926-27 |
| McIntosh | A. | Albany | Flint | A 99 | Albany Municipality | 1927-28 |
| McIntosh | A. | Westonia | Chevrolet Truck | WT ● 38 | Westonia Road Board | 1927-28 |
| Mcintosh | A. | 46 Aberdeen Street, Perth | Hudson | 3355 | Metro Hire or Trade | 1927-28 |
| McIntosh | A. | Albany Road, Cannington | Studebaker | 7657 | Metro Private Car | 1927-28 |
