| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 15 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Horn not working |1.7.3a| | 7 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Handlebar mounting excessively deteriorated |flexible type| |2.1.1d| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Registration plate issues | 3 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Brake lever insecure |3.1.2a| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Rear wheel spindle loose |2.4.A.2b| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Direction indicator not working |1.5.1c| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Front suspension assembly component cracked |2.3.1| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Rear wheel has a loose wheel stud|s| |4.2.3a| | 1 |
| Centre Front Upper Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Centre Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Offside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Nearside Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Brake pedal is inoperative |3.1.3c| | 1 |
| Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Rear Brake component is fractured |3.1.5| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Wheel spoke cracked. |4.2.1b| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Headlamp switch faulty |1.2.4| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |