| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 8 |
| Registration plate issues | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear position lamp obscured more than 50% |1.1.1d| | 1 |
| Rear reflector on motorcycle dirty and function impaired |1.4.2a| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front All position lamps adversely affected by the operation of the horn |1.1.3b| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Front position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Wheel spindle locking device missing (5.2.1 (d)) | 1 |
| Rear Brake rod insecure (1.1.15 (c)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Central Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |