| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 9 |
| Registration plate issues | 7 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Horn not working |1.7.3a| | 5 |
| Headlamp aim out of alignment | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Horn missing |1.7.1| | 2 |
| Rear Wheel spoke excessively loose |4.2.1b| | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake component defective due to a deliberate modification which significantly reduces the original strength |3.1.5| | 1 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Centre Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |