| Marques | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
| Marques | # | Date | Liens | Photos | Forums | Histoire |
| Idea (Italy) | - | |||||
| IFA (Germany) | 3 | 1948 - 1956 | --> 4 |
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| Imperia (Belgium) | 7 | 1904 - 1958 | --> 12 |
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| Imperial (United States of America) | 20 | 1954 - 1975 | --> 69 |
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| Infiniti (Japan) | 32 | 1989 - | --> 4 | --> 88 |
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| Innocenti (Italy) | 40 | 1960 - 1997 | --> 25 |
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| Inovodesign (Italy) | - | |||||
| Inter (France) | 1 | 1953 - 1956 | ||||
| Invicta (United Kingdom) | 1 | 2001 - | --> 6 |
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| Iran Khodro (Iran) | 3 | - | --> 8 |
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| Irmscher (Germany) | 1 | - | --> 4 | |||
| Isatis (France) | 1 | - | --> 5 | |||
| Isdera (Germany) | 3 | 1969 - | --> 10 |
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| Iso (Italy) | 7 | 1953 - 1976 | --> 12 |
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| Isotta-Fraschini (Italy) | 6 | 1899 - 1949 | --> 21 |
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| Isuzu (Japan) | 113 | 1916 - | --> 8 | --> 62 |
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| Itala (Italy) | 1 | 1903 - 1934 | --> 4 |
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| Italdesign (Italy) | 15 | 1968 - | --> 46 |
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| Italsuisse (Switzerland) | 1960 - 1967 | |||||
| Izhmash JSC (Russia) | 2 | 1966 - | --> 4 |
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