| Most common failures | No# failures |
|---|
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 4 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Direction indicators not working |1.5.1c| | 2 |
| Front suspension assembly component loose |2.3.1| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Registration plate issues | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear suspension component loose |2.4.A.1a| | 2 |
| An item not tested |Manual| | 2 |
| Upper Throttle operating incorrectly |6.2.1f| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Horn replaced by a siren |1.7.3b| | 1 |
| Nearside Front Front mudguard insecure |2.3.7| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Rear Motorcycle structure corroded to the extent that the rigidity of the assembly is significantly reduced frame around rear shock absorber mounts (6.1.1 (c) (i)) | 1 |
| Offside Rear Wheel fixing loose (multiple fixings) wheel adjuster (5.2.1 (a) (i)) | 1 |
| Front suspension assembly component excessively bent |2.3.1| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Direction indicator insecure |1.5.3b| | 1 |
| Headlamp aim out of alignment | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Fuel pipe leaking |7.2.1a| | 1 |
| Front Front suspension assembly component loose |2.3.1| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |