| SHERP ATV 2018-2018 | SHERP |
| Sierra Cars ALPHA | racing-vehicles, SierraCars |
| Sierra Cars RX3 | racing-vehicles, SierraCars |
| Simca 1000 1961-1978 (Simca Mille) | Abarth-Simca, sedans, Simca, sports-cars |
| Simca 1000 Coupe 1962-1971 (Simca 1200S) | coupes, Simca, sports-cars |
| Simca-Gordini Type 15 1947-1953 | Formula1-racing, Gordini, open-wheels, racing-vehicles, Simca |
| SIN R1 (GT racing spec) | GT-racing, racing-vehicles, SIN |
| SIN R1 2015-current | SIN |
| Singer Motors (UK) Gazelle IIIC Saloon 1958-1963 | Singer |
| Singer Vehicle Design Porsche 911 (964) | coupes, custom-builds, fh5-roster, Porsche, Singer-VD |
| Sintura S99 1999 | GT1-racing, racing-vehicles, Sintura |