| Pentreath | F. | Dowerin | Dodge 23 H.P. | D ● 1 | Dowerin Road Board | 1922-23 |
| Pentreath | F. | Dowerin | Dodge 23 H.P. | D ● 1 | Dowerin Road Board | 1923-24 |
| Pentreath | F. | Dowerin | Dodge | D ● 1 | Dowerin Road Board | 1924-25 |
| Pentreath | F. | Dowerin | Dodge | D ● 1 | Dowerin Road Board | 1925-26 |
| Pentreath | F. | Dowerin | Dodge | D ● 1 | Dowerin Road Board | 1926-27 |
| Pentreath | F. | Dowerin | Dodge | D ● 1 | Dowerin Road Board | 1927-28 |
| Peover | J. L. | Wickepin | Ford | WK ● 232 | Wickepin Road Board | 1927-28 |
| Pepe | Fred | Bolgart | Ford | VP ● 36 | Victoria Plains Road Board | 1925-26 |
| Pepe | Fred | Bolgart | Ford | VP ● 36 | Victoria Plains Road Board | 1926-27 |
| Peppall | Mrs I. I. | Katanning | Dodge | KA ● 293 | Katanning Road Board | 1926-27 |
| Peppall | Mrs I. I. | Katanning | Dodge | KA ● 293 | Katanning Road Board | 1927-28 |
| Pepper | Louisa | Woolundra | Studebaker | KE ● 85 | Kellerberrin Road Board | 1927-28 |
| Pepper | Mrs B. | Palgarrup | Buick | WA ● 136 | Manjimup Road Board | 1926-27 |
| Pepper | Mrs B. | Palgarrup | Buick | WA ● 136 | Manjimup Road Board | 1927-28 |
| Peppermint Grove Road Board | - | - | Fordson Roller | 1072 | Metro Private Car | 1926-27 |
| Peppermint Grove Road Board | - | - | Fordson Roller | 1072 | Metro Private Car | 1927-28 |
| Pepworth | R. S. | Amherst Street, East Fremantle | Chevrolet | 6017 | Metro Private Car | 1925-26 |
| Perch | H. | Baandee | Ford 19 H.P. | KE ● 32 | Kellerberrin Road Board | 1922-23 |
| Percival | L. I. Mrs | 49 Chelmsford Road, Perth | Essex | 4230 | Metro Private Car | 1923-24 |
| Percival | Lucy | 25 Rockwood Street, Mount Lawley | Hudson | 7341 | Metro Private Car | 1925-26 |
| Percival | Mrs L. I. | 193 Hensman Road, Subiaco | Essex | 4230 | Metro Private Car | 1924-25 |
| Percy | J. | Alfred Road, North Fremantle | Overland | 7163 | Metro Private Car | 1925-26 |
| Percy | J. | Alfred Road, North Fremantle | Overland | 7163 | Metro Private Car | 1926-27 |
| Percy | J. B. | Tibradden | Dodge | G ● 19 | Geraldton Road Board | 1923-24 |
| Percy | J. B. | Tibradden | Dodge | G ● 19 | Geraldton Road Board | 1924-25 |
| Percy | P. | Broome | Hupmobile | BM ● 12 | Broome Road Board | 1925-26 |
| Percy | P. | Broome | Hupmobile | BM ● 12 | Broome Road Board | 1926-27 |
| Percy | Patrick | Broome | Hupmobile | M ● 11562 | Broome Road Board | 1923-24 |
| Percy | R. | Broome | Hupmobile | BM ● 12 | Broome Road Board | 1927-28 |
| Percy | R. G. | Tibradden | Overland Truck | G ● 17 | Geraldton Road Board | 1926-27 |
| Percy | R. G. | Tibradden North Gully | Dodge | G ● 19 | Geraldton Road Board | 1926-27 |
| Percy | R. G. J. | Tibradden, North Gully | Dodge | G ● 19 | Geraldton Road Board | 1925-26 |
| Percy | R. G. J. | Tibradden | Overland Truck | G ● 17 | Geraldton Road Board | 1927-28 |
| Percy | R. G. J. | Tibradden, North Gully | Buick | G ● 18 | Geraldton Road Board | 1927-28 |
| Percy | R. J. | Meekatharra | Ford | MK ● 36 | Meekatharra Road Board | 1927-28 |
| Percy | R. J. G. | Garden Gully Station | Ford | MK ● 36 | Meekatharra Road Board | 1924-25 |
| Percy | T. H. | Greenbushes | Chevrolet | GR ● 46 | Greenbushes Road Board | 1927-28 |
| Percy & Robson | - | 96 Victoria Ave Fremantle | Lacre Wgn | 6471 | Metro Private Car | 1924-25 |
| Percy & Robson | - | Victoria Avenue, North Fremantle | Ford Truck | 8968 | Metro Private Car | 1925-26 |
| Perdriau Rubber Co | - | 38 Bazaar Terrace, Perth | Dodge | 2807 | Metro Private Car | 1923-24 |
| Perdriau Rubber Co | - | 39 Bazaar Terrace, Perth | Dodge | 2808 | Metro Private Car | 1923-24 |
| Perdriau Rubber Co | - | 878 Hay Street, Perth | Dodge | 2807 | Metro Private Car | 1924-25 |
| Perdriau Rubber Co | - | 878 Hay Street, Perth | Dodge | 2808 | Metro Private Car | 1924-25 |
| Perdriau Rubber Co | - | 878 Hay Street, Perth | Ford Wagon | 4947 | Metro Private Car | 1924-25 |
| Perdriau Rubber Co | - | 878 Hay Street, Perth | Dodge | 2807 | Metro Private Car | 1925-26 |
| Perdriau Rubber Co | - | 878 Hay Street, Perth | Dodge | 2808 | Metro Private Car | 1925-26 |
| Perdriau Rubber Co | - | 878 Hay Street, Perth | Ford Wagon | 4947 | Metro Private Car | 1925-26 |
| Perdriau Rubber Co | - | 878 Hay Street, Perth | Ford | 786 | Metro Private Car | 1925-26 |
| Perdriau Rubber Co | - | 878 Hay Street, Perth | Ford Wagon | 4947 | Metro Private Car | 1926-27 |
| Perdriau Rubber Co | - | 878 Hay Street, Perth | Ford | 786 | Metro Private Car | 1926-27 |
