| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 12 |
| Registration plate issues | 12 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Headlamp aim out of alignment | 4 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Direction indicator insecure |1.5.3b| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Rear wheel insecure |4.2.3b| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Fuel cap sealing washer torn |7.2.2c| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Horn not working |1.7.3a| | 1 |
| Nearside Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Centre Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Centre Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Central Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Central Rear Position lamp switch allows the rear position lamp to be switched off when the headlamp(s) are on (4.2.2 (a)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |