| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 6 |
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| Registration plate issues | 4 |
| Horn not working |1.7.3a| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Front Upper Brake fluid reservoir leaking hydraulic fluid No rubber seal under reservoir level cap top |3.2.B1e| | 1 |
| Offside Front Upper Brake fluid reservoir leaking hydraulic fluid Leakinf fluid |3.2.B1e| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Rear Brake pedal mounting insecure |3.1.2a| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Brake locking device insecure |3.2.A1e| | 1 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear suspension component excessively corroded. |2.4.A.1a| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear reflector on motorcycle deteriorated and function impaired |1.4.2a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front Headlamp aim not tested |1.6| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.3a| | 1 |
| Rear Footrest insecure |6.2.1a| | 1 |
| Rear Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Brake hose damaged | 1 |
| Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Nearside Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Direction indicator insecure |1.5.3b| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Offside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |