| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 16 |
| Steering headbearing has excessive free play |2.2.2| | 6 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 5 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Registration plate issues | 4 |
| Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front Position lamp not working (4.2.1 (a)) | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Horn not working |1.7.3a| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Rear Footrest missing both (6.2.12 (a)) | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Central Front Lower Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Central Front Upper Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Central Rear Lower Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Indicator tell tale not operating correctly |1.5.2| | 1 |
| Nearside Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Headlamp aim not tested dip beam not working (4.1.2 (b)) | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear Direction indicator obviously incorrectly positioned obviously to close together (4.4.3 (a)) | 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 |
| Throttle operating incorrectly engine revs up on right lock (6.2.7 (a) (i)) | 1 |
| Front Shock absorber insecurely attached lower fork brace missing (5.3.2 (a) (i)) | 1 |
| Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Headlamp light intensity severely reduced Wired incorrectly! (4.1.4 (a)) | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Front Footrest missing (6.2.12 (a)) | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Headlamp damaged and function impaired |1.2.3a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Nearside Rear Upper Motorcycle structure cracked |6.1.1a| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Headlamp light source and lamp not compatible (4.1.4 (c)) | 1 |