| IIIingworth | W. | Esperance | Ford | EO ● 1 | Esperance Road Board | 1925-26 |
| Ilberry | T. H. | Bridgetown | Essex | B ● 59 | Bridgetown Road Board | 1924-25 |
| Ilbery | T. H. | Wooroloo | Harley-Davidson | GE ● 19 | Greenmount Road Board | 1919 |
| Ilbery | Thomas H. | Bridgetown | Ford | B ● 25 | Bridgetown Road Board | 1923-24 |
| Ilbery | W. S. | Wickepin | Ford 20 H.P. | WK ● 4 | Wickepin Road Board | 1919 |
| Ilbery | W. S. | Wickepin | Ford 20 H.P. | WK ● 4 | Wickepin Road Board | 1922-23 |
| Iles | D. | Nangeenan | Indian Motorcycle | MD ● 80 | Merredin Road Board | 1922-23 |
| Iles | D. | Nangeenan | Dodge | MD ● 126 | Merredin Road Board | 1926-27 |
| Iles | D. | Merredin | Maxwell | MD ● 233 | Merredin Road Board | 1926-27 |
| Iles | D. | Merredin | Maxwell | MD ● 233 | Merredin Road Board | 1927-28 |
| Iles | F. | Emu Hill | Ford Truck | NB ● 132 | Narembeen Road Board | 1924-25 |
| Iles | F. | Emu Hill | Dodge | NB ● 25 | Narembeen Road Board | 1925-26 |
| Iles | F. | Emu Hill | Ford Wagon | NB ● 26 | Narembeen Road Board | 1925-26 |
| Iles | F. | Emu Hill | Dodge | NB ● 25 | Narembeen Road Board | 1926-27 |
| Iles | F. | Emu Hill | Ford Wagon | NB ● 26 | Narembeen Road Board | 1926-27 |
| Iles | F. | Emu Hill | Ford Wagon | NB ● 26 | Narembeen Road Board | 1927-28 |
| Iles | F. J. | Emu Hill | Dodge | NB ● 39 | Narembeen Road Board | 1925-26 |
| Iles | F. J. | Emu Hill | Dodge | NB ● 39 | Narembeen Road Board | 1926-27 |
| Iles | F. J. | Emu Hill | Dodge | NB ● 39 | Narembeen Road Board | 1927-28 |
| Iles | F. J. | Narembeen | Overland Truck | NB ● 118 | Narembeen Road Board | 1927-28 |
| Iles | G. | Nangeenan | Oakland 23 H.P. | MD ● 52 | Merredin Road Board | 1922-23 |
| Iles | G. | Nangeenan | Oakland 23 H.P. | MD ● 52 | Merredin Road Board | 1923-24 |
| Iles | G. | 32 Adderley Street, Claremont | Ford | 5218 | Metro Private Car | 1924-25 |
| Iles | G. | Nangeenan | Oakland | MD ● 52 | Merredin Road Board | 1926-27 |
| Iles | G. L. | Nangeenan | Oakland | MD ● 52 | Merredin Road Board | 1924-25 |
| Iles | J. E. | Carnamah | Chevrolet Truck | CA ● 167 | Carnamah Road Board | 1927-28 |
| Iles | J. W. | Narembeen | Oldsmobile | NB ● 9 | Narembeen Road Board | 1925-26 |
| Iles | J. W. | Narembeen | Ford | NB ● 78 | Narembeen Road Board | 1925-26 |
| Iles | J. W. | 711 Wellington Street, Perth | International Bus | 3746 | Metro Hire or Trade | 1926-27 |
| Iles | J. W. | 711 Wellington Street, Perth | International Bus | 3753 | Metro Hire or Trade | 1926-27 |
| Iles | J. W. | Narembeen | Ford | NB ● 78 | Narembeen Road Board | 1926-27 |
| Iles | W. E. | 168 Barker Road, Subiaco | Studebaker | 4949 | Metro Private Car | 1924-25 |
| Iles | W. G. | Carnarvon | Dodge | CN 14 | Carnarvon Municipal Council | 1927-28 |
| Iles | W. R. S. | Emu Hill | Ford Truck | NB ● 120 | Nareembeen District Road Board | 1926-27 |
| Iles | W. R. S. | Emu Hill | Ford Truck | NB ● 120 | Narembeen Road Board | 1927-28 |
| Iles | W. R. S. | Emu Hill | Ford Wagon | NB ● 158 | Narembeen Road Board | 1927-28 |
| Illidge | R. G. | 17 Howard Street, Perth | Ford | 11265 | Metro Private Car | 1926-27 |
| Illidge | R. G. | 17 Howard Street, Perth | Studebaker | 12779 | Metro Private Car | 1927-28 |
| Illingsworth | E. P. | Narrogin | Ford Truck | NGN 115 | Narrogin Municipality | 1925-26 |
| Illingsworth | E. P. | Narrogin | Ford Truck | NGN 115 | Narrogin Municipality | 1926-27 |
| Illingsworth | H. | 40 Guildford Road, Mount Lawley | Overland | 1246 | Metro Private Car | 1923-24 |
| Illingsworth | Mrs L. | East Bunbury | Sunbeam 3 ¼ H.P. | BB ● 1 | Bunbury Road Board | 1919 |
| Illingsworth | Mrs L. | Bunbury | Humber | By 72 | Bunbury Municipality | 1922-23 |
| Illingwerth | M. | Norseman | Ford | NM ● 1 | Norseman Road Board | 1927-28 |
| Illingworth | E. P | Narrogin | Chervrolet | NGN 3 | Narrogin Municipality | 1923-24 |
| Illingworth | E. P. | Narrogin | Chevrolet | NGN 3 | Narrogin Municipality | 1924-25 |
| Illingworth | E. P. | Narrogin | Chevrolet | NGN 3 | Narrogin Municipality | 1925-26 |
| Illingworth | E. P. | Narrogin | Chevrolet | NGN 3 | Narrogin Municipality | 1926-27 |
| Illingworth | E. P. | Narrogin | Chevrolet | NGN 3 | Narrogin Municipality | 1927-28 |
| Illingworth | H. | 40, Guildford Road, Mount Lawley | Overland | 1246 | Metro Private Car | 1922-23 |
