| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 12 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear reflector on motorcycle obscured |1.4.1| | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Offside Rear Footrest missing |6.2.1a| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 3 |
| Registration plate issues | 3 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front Front wheel insecure |4.2.3b| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Front Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Headlamp aim does not move downwards when dipped |1.6.5| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Rear Brake back plate|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside 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 |
| Central Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear Brake linkage clevis joint excessively worn |3.2.A1d| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Registration plate lamp issues | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition |8.1.1 |a|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 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 Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Rear Floor brake test indicates a severely juddering brake |3.3C2d.| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside 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 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Drive belt worn to excess |6.2.1e| | 1 |
| Rear Drive belt sprocket worn to excess |6.2.1e| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Front shock absorber seal failed and leaking oil both |2.3.3| | 1 |
| Front Lower Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Upper Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride chain circlip wrong way round |6.2.1h| | 1 |
| Direction indicators not working missing |1.5.1c| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |