| Cizeta V16T 1991-1995 | Cizeta, coupes, supercars |
| Clan Crusader 1971-1974 | Clan |
| Climax CR1 | |
| CMC Zinger 2005-current | Mitsubishi |
| CODA Automotive CODA EV (2012) | |
| Colani L’Aiglon | |
| Colani Mamba | |
| Colani Shark | |
| Colani-Ford GT80 | Ford |
| Commuter Cars Tango 2008-current | |
| Consulier GTP 1985-2000 (Mosler Raptor / Intruder) | coupes, Mosler, open-top-cars, supercars |
| Cooper T39 (Sportscar racing) 1955-1956 | Cooper, racing-vehicles, sportscar-racing, WSC-racing |
| Cooper T49 (Sportscar racing) 1959-1966 | Cooper, Group4-racing, racing-vehicles, sportscar-racing, WSC-racing |
| Cooper T57 (Sportscar racing) 1960-1965 | Cooper, Group4-racing, racing-vehicles, sportscar-racing, WSC-racing |
| Cooper T61 (Sportscar racing) 1961-1968 | Cooper, Group4-racing, racing-vehicles, sportscar-racing, WSC-racing |
| Cooper-Jaguar T33 (Sportscar racing) 1954 | Jaguar, open-top-cars, racing-vehicles, sportscar-racing |
| Cooper-Jaguar T38 (Sportscar racing) 1955 | Jaguar, open-top-cars, racing-vehicles, sportscar-racing |
| Cord 810 / 812 1936-1937 | Cord |
| Cord L-29 La Grande Speedster 1931 | concepts-prototypes, Cord, open-top-cars |
| Corwin Getaway | |
| Covington El Tiburon Shark 1962-1962 | |
| Covini B24 1985-1988 | coupes, Covini, sports-cars |
| Covini C6W 2004-current | Corvini |
| Cowper Dax Pikes Peak Special (Hillcimb racing) 2024 | hillclimb-racing, open-top-cars, racing-vehicles |
| Crosley CC Four 1946-1948 | Crosley, sedans, wagons |
| Crosley Farm-O-Road 1950-1952 | Crosley |
| Crosley Hotshot 1949-1952 | Crosley, open-top-cars, sports-cars |
| Cub Cadet Challenger MX 750 EPS | |
| Cub Commuter | |
| Cunningham C-3 1952-1954 | Cunningham |
| Cunningham C-4R 1952-1956 | Cunningham, racing-vehicles, sportscar-racing, WSC-racing |
| Cunningham C7 | |
| Cuno Bistram (1954) | |
| CUPRA Born (TC racing) 2022-current | CUPRA-SEAT, electric-vehicles, racing-vehicles, TC-Racing |
| CUPRA Born 2021-current | CUPRA-SEAT, electric-vehicles, hatchbacks |
| CUPRA DarkRebel 2023 | concepts-prototypes, CUPRA-SEAT, electric-vehicles, sports-cars, wagons |
| CUPRA Formentor 2020-current | crossovers-suvs, CUPRA-SEAT, fh5-roster, hybrid-vehicles |
| CUPRA Leon (TC racing) 2020-current | CUPRA-SEAT, racing-vehicles, TC-Racing, TCR-racing |
| Cupra Tavascan 2023-current | crossovers-suvs, CUPRA-SEAT, electric-vehicles, Volkswagen |
| Cupra Terramar 2024-current | crossovers-suvs, CUPRA-SEAT, hybrid-vehicles |
| Czinger 21C V Max 2023-current | coupes, Czinger, hypercars |
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