Chas Mortimer Grand Prix motorcycle racing results Grand Prix motorcycle racing results

| Year_ | Class_ | Team | Points | Wins |
|---|---|---|---|---|
| 1976 | 250cc | Yamaha | 31 | 0 |
| 1976 | 350cc | Yamaha | 54 | 1 |
| 1976 | 500cc | Yamaha | 16 | 0 |
| 1977 | 250cc | Yamaha | 5 | 0 |
| 1977 | 350cc | Yamaha | 1 | 0 |
| 1978 | 250cc | Yamaha | 12 | 0 |
| 1979 | 250cc | Yamaha | 14 | 0 |
| 1984 | 250cc | Yamaha | 0 | 0 |