| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 52 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 46 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 23 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 18 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 17 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 17 |
| Stop lamp remains on when the brake is released |1.3.1e| | 16 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 16 |
| Stop lamp remains on when the brakes are released | 15 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 15 |
| Registration plate issues | 14 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Steering headbearing has excessive free play |2.2.2| | 11 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 10 |
| Registration plate lamp issues | 10 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 8 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 8 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 5 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 5 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 5 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 4 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 4 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 4 |
| Rear Brake lever mounting insecure |3.1.2a| | 4 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 4 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 4 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 4 |
| Front Brake excessively binding (1.2.1 (f)) | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 4 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 3 |
| Headlamp insecure |1.2.3b| | 3 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 3 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 3 |
| Headlamp aim not tested |1.6| | 3 |
| Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 3 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 3 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Horn not working |1.7.3a| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 2 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Offside Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Lower Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 2 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 2 |
| Stop lamp does not emit a steady light |1.3.1b| | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Nearside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |