| Mighall | R. | Koorda | Standard | WM ● 305 | Wyalkatchem Road Board | 1927-28 |
| Miguel | F. | Hope Valley | Gray Truck | RO ● 24 | Rockingham Road Board | 1925-26 |
| Miguel | F. | Hope Valley | Gray Truck | RO ● 24 | Rockingham Road Board | 1926-27 |
| Miguel | J. | Nangeenan | Ford Truck | MD ● 128 | Merredin Road Board | 1925-26 |
| Miguel | J. | Newcarnie | Ford Truck | MD ● 128 | Merredin Road Board | 1926-27 |
| Miguel | J. | Newcarnie | Ford Truck | MD ● 213 | Merredin Road Board | 1927-28 |
| Miguel | J. A. | 7-Mile | Standard Wagon | RO ● 72 | Rockingham Road Board | 1927-28 |
| Miguel | Mrs K. | Hope Valley | Republic | RO ● 63 | Rockingham Road Board | 1927-28 |
| Miguel Harrison San | - | Howard Place Perth | Renault | 2412 | Metro Private Car | 1922-23 |
| Mijen | A. | Wyalkatchem | Cleveland | WM ● 82 | Wyalkatchem Road Board | 1926-27 |
| Mijen | A. | Wyalkatchem | Cleveland | WM ● 82 | Wyalkatchem Road Board | 1927-28 |
| Milalrs & Co | T. & T. | Marine Terrace, Geraldton | Essex | GN 35 | Geraldton Municipality | 1924-25 |
| Milbank | C. | Bayview Mansions Claremont | Columbia | 7507 | Metro Private Car | 1925-26 |
| Milbank | C. H. | 13 The Mansions. Saint George's Terrace, Perth | Columbia | 4205 | Metro Private Car | 1924-25 |
| Milbank | C. H. | Perth | Colombia | 4205 | Metro Private Car | 1925-26 |
| Mildwater | E. | Wagin | Ford 20 H.P. | WM ● 10 | Wagin Municipality | 1919 |
| Mildwater | E. | Wagin | Maxwell 17 H.P. | WM 10 | Wagin Municipality | 1922-23 |
| Mildwater | Mrs R. | Narembeen | Oakland | NB ● 48 | Narembeen Road Board | 1927-28 |
| Mildwater | R. | Narembeen | Chevrolet | NB ● 48 | Narembeen Road Board | 1925-26 |
| Mildwater | R. | Narembeen | Chevrolet | NB ● 48 | Narembeen Road Board | 1926-27 |
| Mildwater | W. G. E. V | Wagin | Maxwell | W ● 65 | Wagin Road Board | 1926-27 |
| Mildwaters | C. H. R. | Wagin | Indian 7 H.P. Motorcycle & Sidecar | W ● 15 | Wagin Road Board | 1922-23 |
| Mildwaters | E. | Wagin | Maxwell 25 H.P. | W 10 | Wagin Road Board | 1916 |
| Mildwaters | E. | Wagin | Maxwell 25 H.P. | W ● 10 | Wagin Road Board | 1917-18 |
| Mildwaters | G. | Wagin | - | W 4 | Wagin Road Board | 1916 |
| Mildwaters | W. G. E. V. | Wagin | Indian Motorcycle | W ● 2 | Wagin Road Board | 1922-23 |
| Mildwaters | W. G. E. V. | Wagin | Maxwell | W ● 65 | Wagin Road Board | 1924-25 |
| Mildwaters | W. G. E. V. | Wagin | Maxwell | W ● 65 | Wagin Road Board | 1925-26 |
| Mildwaters | W. G. E. V. | Wagin | Maxwell | W ● 65 | Wagin Road Board | 1927-28 |
| Mildwaters | W. G. E. V. | Wagin | Ford | W ● 126 | Wagin Road Board | 1927-28 |
| Miler | Mary. | Bunbury | Ford | BY 93 | Bunbury Municipality | 1925-26 |
| Miles | A. | Kondut | Dodge | WB ● 15 | Wongan-Ballidu Road Board | 1926-27 |
| Miles | A. | Kondut | Dodge | WB ● 15 | Wongan-Ballidu Road Board | 1927-28 |
| Miles | A. C. | Broadway West Guildford | Ford | 1538 | Metro Private Car | 1922-23 |
| Miles | A. F. | Dowerin | Ford | D ● 17 | Dowerin Road Board | 1923-24 |
| Miles | A. F. | Dowerin | Ford | D ● 17 | Dowerin Road Board | 1924-25 |
| Miles | A. F. | Dowerin | Ford | D ● 17 | Dowerin Road Board | 1925-26 |
| Miles | A. F. | Dowerin | Chrysler | D ● 17 | Dowerin Road Board | 1926-27 |
| Miles | A. F. | Dowerin | Chrysler | D ● 17 | Dowerin Road Board | 1927-28 |
| Miles | A.C. | Broadway, Bassendean | Ford | 1538 | Metro Private Car | 1923-24 |
| Miles | Allen | Busselton | Ford Truck | BN 58 | Busselton Municipality | 1924-25 |
| Miles | B. C. | 7-Mile Siding, Peel Estate | Dodge | 4224 | Metro Private Car | 1923-24 |
| Miles | B. C. | 7-Mile Peel Estate | Ford | RO ● 27 | Rockingham Road Board | 1925-26 |
| Miles | B. C. | Peel Estate | Brockway | 10498 | Metro Hire or Trade | 1926-27 |
| Miles | B. C. | 7-mile Peel Estate | Nash | RO ● 27 | Rockingham Road Board | 1926-27 |
| Miles | B. C. | 7-MilePeel Estate | Nash | RO ● 27 | Rockingham Road Board | 1927-28 |
| Miles | B. C. | 7-Mile | Brockway Wagon | RO ● 70 | Rockingham Road Board | 1927-28 |
| Miles | C. A | Albany Road, Kenwick | Ford | 2853 | Metro Private Car | 1927-28 |
| Miles | E. | Acton Avenue, South Belmont | Chevrolet Truck | 5441 | Metro Private Car | 1927-28 |
| Miles | F. C. | Mile Siding, Peel Estate | Dodge | 3993 | Metropolitan Hire and Trade Cars | 1923-24 |
