| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 4 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Stop lamp emits other than a steady red light (4.3.3 (a) (ii)) | 1 |
| Registration plate lamp issues | 1 |
| Footrest missing not operating correctly (6.2.12 (a)) | 1 |
| Nearside Rear Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Nearside Rear Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Offside Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Brake fluid significantly below minimum mark (1.1.10 (d) (ii)) | 1 |
| Nearside Direction indicator adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls Rear brake stop light (4.3.2 (a) (iii)) | 1 |
| Brake excessively binding Rear brake (1.2.1 (f)) | 1 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Brake disc contaminated (1.1.14 (b)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Drive chain horseshoe locking device likely to become detached horse shoe clip missing (6.1.7 (j) (ii)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Motorcycle structure joining/attachment plate or fastening insecure belly pan not fully secure (6.1.1 (b) (i)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |