| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 25 |
| Registration plate issues | 9 |
| Rear reflector on motorcycle missing |1.4.1| | 8 |
| Horn not working |1.7.3a| | 7 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Drive chain worn to excess |6.2.1e| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 4 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 4 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Horn sounds harsh or grating |1.7.3c| | 3 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 3 |
| Drive chain excessively loose (6.2.1d) | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear Wheel spoke cracked. |4.2.1b| | 2 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Rear Brake locking device insecure |3.2.A1e| | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Handlebar handgrip missing |2.1.1c| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear reflector on motorcycle damaged and function impaired |1.4.2a| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride l/h and r/h hand grips both insecure |6.2.1h| | 1 |
| Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Front wheel bearings are excessively tight |2.3.5b| | 1 |
| Rear Wheel corroded significantly reducing the original strength |4.2.1a| | 1 |
| Rear Brake component is excessively corroded |3.1.5| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Front Lower Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Lower Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Front Steering lock stop maladjusted |2.1.3| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Upper Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake caliper leaking |1.1.16 |b| |i|| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Centre Front Upper Front suspension has inadequate damping effect. front suspension needed damping increased at station |2.3.6c| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Nearside Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Direction indicators flashing less than 60 times a minute all indicators |1.5.1c| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Upper Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Centre Front Upper All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Rear Upper All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Front Upper Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Front Upper Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Centre Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Rear Upper Rear reflector on motorcycle missing |1.4.1| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 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 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Rear Wheel spoke missing |4.2.1b| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Steering linkage locking device ineffective axle nut |2.1.3 |d|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Direction indicators affected by the operation of another lamp (1.5.1c) | 1 |
| Horn not loud enough to be heard by another road user (1.7.3a) | 1 |
| Exhaust is leaking and excessively noisey (7.1.1b) | 1 |
| Rear reflector on motorcycle missing (1.4.1) | 1 |
| Offside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride split pin missing (6.2.1h) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Stop lamp adversely affected by the operation of another lamp by indicators (4.3.3 (b)) | 1 |
| Front Brake master cylinder leaking (1.1.10 (b) (ii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected sticking (6.2.7 (a) (ii)) | 1 |