| Innovation Race Cars IRC GT (Silhouette racing) 2023-current |
GT-racing, MARC, racing-vehicles, silhouette-racing |
| Inter Proto Series Kuruma 2012-current |
racing-vehicles |
| International Harvester MXT-MVA F&F 2006-2006 |
InternationalHarvest |
| International Harvester Scout 800A 1968-1970 |
InternationalHarvest |
| International Harvester Scout Traveler 1976-1980 |
InternationalHarvest |
| International Harvester Travelall 1210 1965-1975 |
InternationalHarvest |
| Intrepid RM-1 1991-1993 |
GTP-GTC-racing, racing-vehicles |
| Invicta 12/45 1932-1933 |
Invicta |
| Invicta 12/90 1932-1933 |
Invicta |
| Invicta 3 litre 1926-1929 |
Invicta |
| Invicta 4 1/2 litre 1928-1935 |
Invicta |
| Isdera Commendatore 112i concept 1993-1993 |
Isdera |
| Isdera Imperator 108i 1984-1993 |
Isdera, Mercedes |
| Iso Grifo A3/C (Sportscar racing) 1963-1965 (Bizzarrini 5300 GT Corsa) |
Bizzarrini, Iso, racing-vehicles, sportscar-racing, WSC-racing |
| Iso Grifo GL 1965-1974 |
coupes, grand-tourers, Iso, open-top-cars |
| Iso Lele 1969-1974 |
Iso |
| Iso Rivolta 1962-1970 |
Iso |
| Iso Rivolta GTZ 2021 |
Iso, Zagato |
| Isotta Fraschini Runabout 1901-1902 |
Isotta-Fraschini |
| Isotta Fraschini Tipo 6 LMH Competizione (Hypercar racing) 2024 |
Duqueine, Isotta-Fraschini, LM-Hypercar, racing-vehicles |
| Isotta Fraschini Tipo 8 1919-1934 |
Isotta-Fraschini |
| Isotta Fraschini Tipo FE / FENC 1908-1910 |
Isotta-Fraschini |
| Isotta Fraschini Tipo IM 1913 |
Isotta-Fraschini |
| Isotta Fraschini Tipo KM 1910-1914 |
Isotta-Fraschini |
| Isuzu 117 Coupe 1968-1981 |
Isuzu |
| Isuzu 4200R 1989 |
concepts-prototypes, coupes, Isuzu, sports-cars |
| Isuzu Bellett GT-R 1969-1973 |
Isuzu |
| Isuzu Gemini 1985-1990 (I-Mark, Spectrum, Sunburst) |
Chevrolet, Geo, hatchbacks, Holden-HSV-HDT, Isuzu |
| Isuzu Piazza 1980-1990 (Isuzu Impulse, Holden Piazza) |
Isuzu |
| Isuzu Piazza 1990-1993 (Isuzu Impulse, Holden Piazza) |
Isuzu |
| Isuzu Piazza Super Silhouette racing |
Isuzu, racing-vehicles, silhouette-racing |
| Isuzu Rodeo (MU) 1998-2004 |
Isuzu |
| Isuzu Trooper 1989- |
Isuzu |
| Isuzu VehiCROSS 1997-2001 |
Isuzu |
| Italdesign Aztec 1988-1992 |
Italdesign |
| Italdesign DaVinci concept 2019-2019 |
concepts-prototypes, Italdesign |
| Italdesign Zerouno 2017-current |
Italdesign |
| Iveco Massif / Campagnola 2007-2011 |
Iveco |