| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 10 |
| Horn not working |1.7.3a| | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Direction indicator not working |1.5.1c| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Wheel spoke excessively loose |4.2.1b| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 2 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Front Brake component defective due to a deliberate modification which significantly reduces the original strength |3.1.5| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Floor brake test No brake control achieves an efficiency of 30% (1.2.2 (a) (i)) | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Wheel damaged significantly reducing the original strength |4.2.1a| | 1 |
| Steering linkage component modified such that the steering is adversely affected (2.1.3 (f) (ii)) | 1 |
| Lower Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Centre Horn not working |1.7.3a| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Offside Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Rear Chain guard insecure |6.2.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Front Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Rear Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Brake reaction bracket insecure |3.2.A1j| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |