| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 5 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 3 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Registration plate issues | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Rear Brake locking device missing |3.2.A1e| | 2 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Front mudguard insecure |2.3.7| | 2 |
| Rear Wheel spoke excessively bent |4.2.1b| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Headlamp at least one does not illuminate on dipped beam none |1.2.2a|i|| | 1 |
| Headlamp at least one does not illuminate on main beam none |1.2.2a|ii|| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on does not work |1.1.3a| | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Front Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak Fork seal |5.3.2 |b|| | 1 |
| Offside Front Shock absorber has a serious fluid leak Fork seal |5.3.2 |b|| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Front Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Front Footrest missing |6.2.1a| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride tie bar |6.2.1h| | 1 |
| Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Centre Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Offside Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Central Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Central Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on (1.1.3a) | 1 |
| Horn not working (1.7.3a) | 1 |
| Headlamp at least one does not illuminate on dipped beam (1.2.2a(i)) | 1 |
| Stop lamp affected by the operation of another lamp indicators cause lamp to flash (1.3.2) | 1 |
| Stop lamp does not illuminate immediately a brake applies rear brake (1.3.1a) | 1 |
| Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Horn not working |1.7.3a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Rear Rear suspension component loose |2.4.A.1a| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |