| Most common failures | No# failures |
|---|
| Steering headbearing has excessive free play |2.2.2| | 11 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 10 |
| Headlamp aim out of alignment | 10 |
| Rear reflector on motorcycle missing |1.4.1| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 5 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Front Wheel spoke excessively loose |4.2.1b| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Fuel system component insecure |7.2.1b| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Rear suspension component loose |2.4.A.1a| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Rear Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake lever attachment screws missing |3.1.2b| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Brake pedal attachment screws loose |3.1.2b| | 1 |
| Horn not working |1.7.3a| | 1 |
| Brake hose damaged | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Front Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride drive chain link |6.2.1h| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Upper Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Front Brake hose excessively stretched rerouted due to stop lock position |1.1.12 |b| |ii|| | 1 |
| Rear Suspension component ball joint excessively worn swing arm bush bolt/nut loose |5.3.4 |a| |i|| | 1 |
| Registration plate lamp issues | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Rear Suspension arm ball joint excessively worn |5.3.4 |a| |i|| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Offside Headlamp switch insecure |1.2.4| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Front All direction indicators obviously incorrectly positioned Front turn signals are positioned inside the headlight unit and do not meet the required distance apart of 240 mm (4.4.3 (a)) | 1 |
| Rear Stop lamp emits other than a steady red light (4.3.3 (a) (ii)) | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Fuel system component leaking Carburetor leaking fuel (6.1.3 (b) (i)) | 1 |
| Rear Shock absorber has negligible damping effect Rear damper has seriousely reduced damping (5.3.2 (b)) | 1 |
| Front Headlamp insecure (4.1.1 (c)) | 1 |
| Front Headlamp incorrect colour Headlight shows the nearside turn signal on when switched on to main beam (4.1.4 (a)) | 1 |
| Front Headlamp aim not tested (4.1.2 (b)) | 1 |
| Front Headlamp insecure Headlight is fitted in such a way that it affects the front suspension travel.
It is incorrectly fitted on the lower suspension leg. (4.1.1 (c)) | 1 |
| Nearside Rear Direction indicator obviously incorrectly positioned Nearside rear turn signal is detatched from its mounting point. (4.4.3 (a)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Rear Brake hose damaged and likely to fail hose is slit through to cords |1.1.12 |a|| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Rear Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Rear Brake disc significantly and obviously worn this disc looks like its been welded up at some point |1.1.14 |a| |i|| | 1 |
| Rear Suspension component ball joint excessively worn |5.3.4 |a| |i|| | 1 |
| Front Brake lever attachment screws loose |3.1.2b| | 1 |
| Centre 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 dipped beam |1.2.2a|i|| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Brake hose leaking (1.1.12 (c)) | 1 |
| Rear Brake caliper inadequately mounted and braking performance affected (1.1.16 (c) (ii)) | 1 |
| Rear Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Central Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Offside Front Steering operation restricted in free movement from lock to lock |2.1.4 |c|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Nearside Front Lower Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front Lower Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Centre Front Upper Horn is not a constant note |1.7.3c| | 1 |
| Nearside Rear Lower Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear Lower Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Front Upper Direction indicator not working |1.5.1c| | 1 |
| Offside Front Upper Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Upper Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Upper Direction indicator not working |1.5.1c| | 1 |
| Centre Rear Lower Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Front Lower Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Front Brake caliper inadequately mounted and braking performance affected (1.1.16 (c) (ii)) | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear mono-shock insecure |2.4.B.4| | 1 |
| Front Brake hose fouling |3.2.B3b| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 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 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |