| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 7 |
| Direction indicators not working |1.5.1c| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 4 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Horn is not a constant note |1.7.3c| | 3 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Horn not working |1.7.3a| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Nearside Front Direction indicator insecure |1.5.3b| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Registration plate issues | 2 |
| Front Direction indicators not working |1.5.1c| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Nearside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Nearside Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Direction indicator insecure |1.5.3b| | 1 |
| Front Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Front Wheel spoke excessively loose |5.2.2 |d|| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Brake locking device insecure |3.2.A1e| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Nearside Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Offside Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Wheel fixing missing |single fixing| |5.2.1 |a| |ii|| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Front Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Nearside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Nearside Front suspension assembly has excessive free play in the pivot bearings. |2.3.2| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator 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 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Brake locking device insecure |3.2.A1e| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| All position lamps adversely affected by the operation of the horn |1.1.3b| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |