| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 89 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 32 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 28 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 20 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 18 |
| Steering headbearing has excessive free play |2.2.2| | 16 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 16 |
| Registration plate issues | 13 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Horn not working |1.7.3a| | 11 |
| Fuel cap sealing washer missing |7.2.2c| | 11 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 8 |
| Riders seat insecure |6.2.1a| | 8 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 7 |
| Rear reflector on motorcycle missing |1.4.1| | 7 |
| Exhaust excessively deteriorated |7.1.1a| | 6 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 6 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 6 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 5 |
| Nearside Rear Direction indicator not working |1.5.1c| | 5 |
| Front wheel bearings are excessively rough |2.3.5b| | 5 |
| Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 5 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 5 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 4 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 4 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 4 |
| Nearside Front Direction indicator not working |1.5.1c| | 4 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 2 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Stop lamp affected by the operation of the horn |1.3.2| | 2 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 2 |
| Rear position lamp damaged and function impaired |1.1.1b| | 2 |
| Direction indicator not working |1.5.1c| | 2 |
| Offside Steering lock stop ineffective |2.1.3| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 2 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 2 |
| Brake hose damaged | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Centre Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Nearside Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 2 |
| Headlamp insecure (4.1.1 (c)) | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Stop lamp not working with front brake (4.3.1 (a) (ii)) | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |