| Most common failures | No# failures |
|---|
| Registration plate issues | 8 |
| Headlamp aim out of alignment | 6 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Front Horn not working |1.7.3a| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Rear Drive chain excessively loose |6.2.1d| | 3 |
| Nearside Front Footrest insecure |6.2.1a| | 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 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Direction indicator missing |1.5.1a| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Horn not working |1.7.3a| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front Wheel spindle locking device missing (5.2.1 (d)) | 1 |
| Offside Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front Plate brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.B1c| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Central Rear Rear suspension movement is excessively stiff Rear shock partially seized |2.4.A.3b| | 1 |
| Central Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Direction indicator not working R/H Rear (4.4.1 (a) (ii)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Brake back plate|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Vehicle identification number not legible |6.3.5a| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Front Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Front position lamp flickers when tapped lightly by hand |1.1.3c| | 1 |
| Rear Front position lamp flickers when tapped lightly by hand |1.1.3c| | 1 |
| Rear Brake component is excessively corroded |3.1.5| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Indicator tell tale not functioning |1.5.2| | 1 |
| Front Indicator tell tale not operating correctly |1.5.2| | 1 |
| Stop lamp not working bulb blown (4.3.1 (a) (ii)) | 1 |
| Rear Position lamp not working bulb blown (4.2.1 (a)) | 1 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Offside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Nearside Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Offside Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Direction indicators not working all indicators |1.5.1c| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Rear mono-shock pivot seized |2.4.B.4| | 1 |