| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Front wheel spindle loose |2.3.5a| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Upper Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Offside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Offside Rear Upper Brake locking device missing |3.2.A1e| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Offside Front Lower Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Horn not working |1.7.3a| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Front wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Offside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Front Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Headlamp aim not tested |1.6| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |