| Most common failures | No# failures |
|---|
| Drive chain excessively loose |6.2.1d| | 6 |
| Headlamp aim out of alignment | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear suspension bush has excessive free play swingarm |2.4.A2a|i|| | 1 |
| Nearside Rear Lower Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Central Rear Lower Wheel bearing play so excessive that directional control is impaired |5.1.3 |a| |ii|| | 1 |
| Centre Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Rear Chain guard insecure |6.2.1c| | 1 |
| Centre Front Horn is not continous or uniform |1.7.3c| | 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 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Offside Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear Lower Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Stop lamp does not illuminate immediately a brake applies when foot brake pedal applied a rear brake light not working. |1.3.1a| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Horn not working |1.7.3a| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear Rear suspension component excessively corroded. swinging arm |2.4.A.1a| | 1 |
| Stop lamp not working rear brake (4.3.1 (a) (ii)) | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Brake indicates excessive fluctuation of brake effort front brake disc warped / bent (1.2.1 (e)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Rear Brake pedal pivot excessively worn (1.1.1 (b)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |