| Most common failures | No# failures |
|---|
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Headlamp aim out of alignment | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front suspension has inadequate damping effect. |2.3.6c| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Horn not working |1.7.3a| | 2 |
| Nearside Rear Drive chain excessively tight |6.2.1d| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Rear Drive chain worn to excess |6.2.1e| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Centre Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Nearside Front Chain guard insecure (6.1.7 (i)) | 1 |
| Roller brake test brake efficiency less than 27.5% overall (1.2.2 (a) (ii)) | 1 |
| Rear Chain guard insecure |6.2.1c| | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Central Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Offside Rear Lower Brake pedal is bent and the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Nearside Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Offside Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Centre Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Rear Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Outer Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Registration plate issues | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Centre Front Upper Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Centre Front Upper Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Motorcycle structure adversely modified |6.1.1b| | 1 |
| Brake hose excessively deteriorated | 1 |
| Front Brake master cylinder severely damaged |3.2.B1b| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear suspension component excessively corroded. |2.4.A.1a| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Offside Front Footrest missing |6.2.1a| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |