| Most common failures | No# failures |
|---|
| Registration plate issues | 19 |
| Rear reflector on motorcycle missing |1.4.1| | 16 |
| Headlamp aim out of alignment | 11 |
| Front wheel bearings are excessively rough |2.3.5b| | 7 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 5 |
| Horn not working |1.7.3a| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 2 |
| Horn not working (7.7 (a)) | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Rear Position lamp not working |4.2.1 |a|| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Horn missing |1.7.1| | 2 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Front position lamp insecure |1.1.1c| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Registration plate lamp issues | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride rear sprocket bolts |6.2.1h| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Front Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Front Drive chain worn to excess |6.2.1e| | 1 |
| Offside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Front Brake performance not tested |3.3| | 1 |
| Rear Brake performance not tested |3.3| | 1 |