| Icona Vulcano Titanium 2016-2016 | Icona |
| IKA Torino Cherokee Turismo Carretera | IKA-Renault, racing-vehicles, Turismo-Carretera |
| IKA-Renault Torino 1966-1981 | IKA-Renault |
| Imperial LeBaron (Green Hornet) 1966-1966 | Imperial |
| Indy Lights (IndyCar racing) 2002-2014 | Dallara, IndyCar, Infiniti, open-wheels, racing-vehicles |
| Ineos Grenadier 2022-current | Ineos |
| Inferno Inferno 2020-2020 | Inferno |