| Most common failures | No# failures |
|---|
| Drive chain excessively loose |6.2.1d| | 17 |
| Headlamp aim out of alignment | 11 |
| Drive chain worn to excess |6.2.1e| | 10 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Handlebar deformed |2.1.1b| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Horn not working |1.7.3a| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Registration plate issues | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies wrong bulb fitted |1.3.1a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Brake performance not tested front and rear (1.2.1 (g)) | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Rear Footrest missing |6.2.12 |a|| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Headlamp aim not tested kick up wrong way |4.1.2 |b|| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| All position lamps not working |4.2.1 |a|| | 1 |
| Rear Wheel spoke excessively bent |4.2.1b| | 1 |