| McRohan & O'Byrne | - | Bunbury | Chevrolet | By 74 | Bunbury Municipality | 1924-25 |
| McRohan & O'Byrne | - | Bunbury | Chevrolet | BY 74 | Bunbury Municipality | 1925-26 |
| McRohan & O'Byrne | - | Bunbury | Buick | BY 74 | Bunbury Municipality | 1926-27 |
| McRohan & O'Byrne | - | Bunbury | Buick | BY 74 | Bunbury Municipality | 1927-28 |
| McRostie | E. M. | - | Ford | Y ● 35 | York Road Board | 1917-18 |
| McRostie | E. M. | - | Ford 20 H.P. | Y ● 5 | York Road Board | 1919 |
| Mcrphett | A. E. | Kumminin | Buick | BK ● 82 | Bruce Rock Road Board | 1927-28 |
| Mcrtimore | Mrs | Hope Valley | Ford | RO ● 7 | Rockingham Road Board | 1927-28 |
| McShane | C. L. | 171 Rokeby Road, Subiaco | Rugby | 6764 | Metro Private Car | 1925-26 |
| McShane | C. L. | 24 Alma Road, North Perth | Rugby | 6764 | Metro Private Car | 1926-27 |
| McShane | C. L. | 24 Alma Road, North Perth | Rugby | 6764 | Metro Private Car | 1927-28 |
| McSmith | J. | "Sunday Times" officePerth | Indian & Sidecar | 1168 | Metro Motorcycle | 1922-23 |
| McSorley | F. | 148 Fitzgerald Street, Perth | Oakland | 5 | Metro Private Car | 1925-26 |
| McSorley | F. | 148 Fitzgerald Street, Perth | Oakland | 5 | Metro Private Car | 1926-27 |
| McSorley | F. | 148 Fitzgerald Street, Perth | Oakland | 5 | Metro Private Car | 1926-27 |
| McSorley | Francis | 145 Fitzgerald Street, Perth | Oakland | 5 | Metro Private Car | 1923-24 |
| McSorley | H. F. | 145 Fitzgerald Street | Cadillac 30 H.P. | P 524 | Perth Municipality | 1915 |
| McSorley | H. F. | Fitzgerald Street | Cadalloa 30 H.P. | P 789 | Perth Municipality | 1919 |
| McSorley | H. L. | Perth | Cadillac 40 H.P. | P 524 | Perth Municipality | 1916 |
| McSorty | J. | Ascot Vale, Guildford Road, Belmont | Essex | 5315 | Metro Private Car | 1924-25 |
| McSwain | E. | Bridgetown | Ford | B ● 184 | Bridgetown Road Board | 1926-27 |
| McSwain | E. | Bridgetown | Chevrolet Truck | B ● 193 | Bridgetown Road Board | 1927-28 |
| McSwan | D. & Son | Pemberton | Chevrolet Truck | WA ● 74 | Warren Road Board | 1924-25 |
| McSwan | D. & Son | Pemberton | Chevrolet Truck | WA ● 74 | Manjimup Road Board | 1925-26 |
| McSwan | N. | Pemberton | Ford Truck | WA ● 56 | Manjimup Road Board | 1925-26 |
| McSwan | Norman | Pemberton | Ford Truck | WA ● 56 | Warren Road Board | 1924-25 |
| McSweeny | Mrs W. V | Wongan Hills | Morris-Cowley | WB ● 83 | Wongan-Ballidu Road Board | 1926-27 |
| McSweeny | Mrs W. V. | Wogan Hills | Morris-Cowley | WB ● 83 | Wongan-Ballidu Road Board | 1927-28 |
| McSwinney | - | Augusta | Ford Truck | AU ● 25 | Augusta Road Board | 1927-28 |
| Mctaggart | T. M. | Maylands | Ford 20 H.P. | Ce ● 70 | Municipality of Cottesloe | 1917-18 |
| McTaggart | T. N. | Capel River | Ford Truck | CP ● 24 | Capel Road Board | 1925-26 |
| McTaggart | T. N. | Capel RIver | Ford Truck | CP ● 24 | Capel Road Board | 1926-27 |
| McTaggert | T. N. | Boyanup | Ford Wagon | CP ● 24 | Capel Road Board | 1927-28 |
| McTavish | E. | Yorkrakine | Chevrolet | WM ● 203 | Wyalkatchem Road Board | 1926-27 |
| McTavish | E. | Yorkrakine | Chevrolet | WM ● 203 | Wyalkatchem Road Board | 1927-28 |
| Mctimore | Mrs | Hope Valley | Ford | RO ● 7 | Rockingham Road Board | 1926-27 |
| Mcullin | A. W. | Esplanade Peppermint Grove | Buick | 610 | Metro Private Car | 1927-28 |
| Mcuritz | I. I. | Koolberrin | Dodge | NB ● 73 | Narembeen Road Board | 1927-28 |
| McVea | D. | Gregory Street, Geraldton | Buick | GN 182 | Geraldton Municipality | 1927-28 |
| McVea | Mrs A | Gregory Street, Geraldton | Buick | GN 91 | Geraldton Municipality | 1926-27 |
| McVea | Mrs A | Gregory Street, Geraldton | Buick | GN 91 | Geraldton Municipality | 1927-28 |
| McVea | Mrs A. | Gregory Street, geraldton | Overland | GN 79 | Geraldton Municipality | 1925-26 |
| McVee | C. | Gas-Junction | Ford | GU ● 8 | Upper Gascoyne Road Board | 1926-27 |
| McVee | C. | Goscoyne Junction | Ford | GU ● 8 | Gascoyne Upper Road Board | 1927-28 |
| McVee | J. | Gladstone crescent, Collie | Essex | CM 82 | Collie Municipality | 1925-26 |
| McVee | J. | Gladstone Crescent, Collie | Essex | CM 82 | Collie Municipality | 1926-27 |
| McVee | J. | Gladstone Crescent, Collie | Essex | CM 82 | Collie Municipality | 1927-28 |
| McVee | R. | Shotts | Ford | CO ● 14 | Collie Road Board | 1924-25 |
| McVee | R. | Wittenoom Street, Collie | Essex | CM 29 | Collie Municipality | 1925-26 |
| McVee | R. | Wittenoom Street, Collie | Essex | CM 29 | Collie Municipality | 1926-27 |