| Macdonald Bros | - | Yoting | Ford | Q ● 219 | Quairading Road Board | 1926-27 |
| MacDonald Bros | - | Yoting | Ford | Q ● 219 | Quairading Road Board | 1927-28 |
| MacDonnell | S. | 190 McCourt Street, Leederville | Overland | 931 | Metro Private Car | 1923-24 |
| MacDonnell | S. | 190 McCourt Street, Leederville | Overland | 931 | Metro Private Car | 1924-25 |
| Macfarland & Co | - | 48 Murray Street, Perth | Graham Truck | 4972 | Metro Private Car | 1927-28 |
| Macfarlane | J. M. | 1076 Hay Street, West Perth | Maxwell | 6521 | Metro Private Car | 1924-25 |
| Macfarlane | J. M. | 1076 Hay Street, West Perth | Maxwell | 6521 | Metro Private Car | 1925-26 |
| Macfarlane | J. M. | 1076 Hay Street, West Perth | Maxwell | 6521 | Metro Private Car | 1926-27 |
| Macfarlane | J. M. | 1076 Hay Street, West Perth | Maxwell | 6521 | Metro Private Car | 1927-28 |
| MacFarlane & Co | - | 48 Murray Street, Perth | Ford Wagon | 243 | Metro Private Car | 1922-23 |
| MacFarlane & Co | - | 48 Murray Street, Perth | Ford Wagon | 244 | Metro Private Car | 1922-23 |
| MacFarlane & Co | - | 48 Murray Street, Perth | Ford | 243 | Metro Private Car | 1923-24 |
| MacFarlane & Co | - | 48 Murray Street, Perth | Ford | 244 | Metro Private Car | 1923-24 |
| Macfarlane & Co | - | 48 Murray Street, Perth | Ford Wagon | 9324 | Metro Private Car | 1925-26 |
| Macfarlane & Co | - | 48 Murray Street, Perth | Ford Wagon | 9324 | Metro Private Car | 1926-27 |
| Macfarlane & Co | - | 48 Murray Street, Perth | Ford Wagon | 9324 | Metro Private Car | 1927-28 |
| Macfarlane & Co Ltd | - | 184 Murray Street | Ford 20 H.P. | P 442 | Perth Municipality | 1916 |
| Macfarlane & Co Ltd | - | 184 Murray Street | Ford 20 H.P. | P 442 | Perth Municipality | 1917-18 |
| MacFarlane & Co Ltd | - | 184 Murray Street | Ford 20 H.P. | P 442 | Perth Municipality | 1919 |
| MacGreggor | F. | Kellerberrin | Chevrolet | KE ● 156 | Kellerberrin Road Board | 1926-27 |
| MacGregor | Chas. W. | Commercial Road, Midland Junction | Chevrolet | 1569 | Metro Private Car | 1924-25 |
| MacGregor | F. | Kellerberrin | Chevrolet | KE ● 156 | Kellerberrin Road Board | 1925-26 |
| MacGregor & Ayers | - | Kellerberrin | Overland Truck | KE ● 187 | Kellerberrin Road Board | 1926-27 |
| MacGregor & Ayres | - | Kellerberrin | Overland Truck | KE ● 187 | Kellerberrin Road Board | 1925-26 |
| MacGregor & Ayres | - | Kellerberrin | Overland Truck | KE ● 187 | Kellerberrin Road Board | 1927-28 |
| Mach | Edward J. | 110 Grosvenor Road, Mount Lawley | Rugby | 1171 | Metro Private Car | 1927-28 |
| Machin | A. A. | 23 Pell Street, Jolimont | Chevrolet | 7835 | Metro Private Car | 1926-27 |
| Machin | A. A. | 23 Pell Street, Jolimont | Chevrolet | 7835 | Metro Private Car | 1927-28 |
| Machin | A. J. & A. A. | 23 Peel Street, Jolimont | Chevrolet | 7835 | Metro Private Car | 1925-26 |
| Machin | F. H. | Glentullock, Bridgetown | Yale 7-8 H.P. | B ● 18 | Bridgetown Road Board | 1919 |
| Machin | Geo. | 95 Moore Street, East Perth | B.S.A. 4 H.P. | P 59 | Perth Municipality | 1916 |
| Machin | H. J. | - | B.S.A. 3½ H.P. Motorcycle | NRB | Nelson Road Board | 1915 |
| Machin | H. J. | Bridgetown | Buick | B ● 56 | Bridgetown Road Board | 1924-25 |
| Machin | H. J. | Bridgetown | Buick | B ● 56 | Bridgetown Road Board | 1925-26 |
| Machin | H. J. | Bridgetown | Republic Wagon | B ● 127 | Bridgetown Road Board | 1925-26 |
| Machin | H. J. | Bridgetown | Buick | B ● 56 | Bridgetown Road Board | 1926-27 |
| Machin | H. J. | Bridgetown | Republic Wagon | B ● 127 | Bridgetown Road Board | 1926-27 |
| Machin | H. J. | Bridgetown | Republic Truck | B ● 127 | Bridgetown Road Board | 1927-28 |
| Machin | H. J. | Bridgetown | Buick | B ● 56 | Bridgetown Road Board | 1927-28 |
| Machin | J. J. | Bridgetown | Buick Renabout | B ● 170 | Bridgetown Road Board | 1927-28 |
| Machin | L. | Bridgetown | Chevrolet Truck | B ● 189 | Bridgetown Road Board | 1927-28 |
| Machin | S. A. | 45 Jersey Street, Jolimont | Ford | 1248 | Metro Private Car | 1922-23 |
| Machin | S. A. | 45 Jersey Street, Jolimont | Ford | 1248 | Metro Private Car | 1923-24 |
| Machinery Department | - | - | Car | P 576 | Perth Municipality | 1917-18 |
| Machinery Department | - | - | Car | P 577 | Perth Municipality | 1917-18 |
| Machinery Department | - | - | Car | P 578 | Perth Municipality | 1917-18 |
| Machinery Department | - | - | Car | P 579 | Perth Municipality | 1917-18 |
| Machinery Department | - | Perth | Douglas | 1025 | Metro Motorcycle | 1922-23 |
| MacIntosh | J. | Fitzgerald Street, Northam | Ford | N 65 | Northam Municipality | 1923-24 |
| MacIntosh | J. | Fitzgerald Street | Ford | N 65 | Northam Municipality | 1924-25 |