| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 8 |
| Horn not working |1.7.3a| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Direction indicator not working |1.5.1c| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Wheel fixing loose (single fixing) missing split pin (5.2.1 (a) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Brake lever excessively damaged |3.2.A1c| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen wrong way |4.1.2 |a|| | 1 |
| Front Wheel fixing missing |multiple fixings| split pin |5.2.1 |a| |i|| | 1 |
| Rear Wheel fixing missing |multiple fixings| split pin missing |5.2.1 |a| |i|| | 1 |
| Rear Brake component inadequately mounted brake arm split pin missing |1.1.21 |c|| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Offside Footrest missing |6.2.1a| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Offside Front Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |