| Category | Light weight sports cars |
|---|---|
| Country |  United Kingdom |
| Inaugural season | 1970 |
| Folded | 1971 |
| Constructors | Nerus Merlyn Royale Aldon Elden |
| Engine suppliers | Ford Kent BMC |
| Tyre suppliers | Firestone F100 |
The Formula F100 was a racing class in 1970 and 1971. The class was open to lightweight sports cars powered by a 1300cc engine (usually a Ford Kent engine or 1300cc BMC engine).