| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 14 |
| Registration plate issues | 12 |
| Horn not working |1.7.3a| | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Headlamp aim out of alignment | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Horn missing |1.7.1| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 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| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Lower Headlamp insecure |1.2.3b| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Nearside Horn not working |1.7.3a| | 1 |
| Rear Roller brake test indicates brake effort fall 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 |
| Nearside Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Nearside Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Nearside Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride split link worn |6.2.1h| | 1 |
| Front Horn not working |7.7 |a| |ii|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear Wheel spoke cracked (5.2.2 (d)) | 1 |
| Brake component insecure R clip missing (1.1.21 (c)) | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Motorcycle structure joining/attachment plate or fastening insecure sub frame bolt missing (6.1.1 (b) (i)) | 1 |
| Fuel pipe insecure lock wire on fuel line (6.1.3 (a) (i)) | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |