| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Horn not working |1.7.3a| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Footrest insecure |6.2.1a| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Offside Inner Rear Lower Brake locking device missing |3.2.A1e| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Registration plate issues | 1 |
| Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Rear wheel spindle securing nut locking device missing split pin |2.4.A.2b| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Wheel spindle locking device missing (5.2.1 (d)) | 1 |
| Rear Wheel spindle locking device missing (5.2.1 (d)) | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |