| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 42 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 27 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 26 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 25 |
| Registration plate lamp issues | 20 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 17 |
| Registration plate issues | 14 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 13 |
| Steering headbearing has excessive free play |2.2.2| | 10 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Stop lamp remains on when the brakes are released | 7 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Stop lamp remains on when the brake is released |1.3.1e| | 6 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 6 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Horn not working |1.7.3a| | 5 |
| Front Brake excessively binding (1.2.1 (f)) | 5 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 5 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 4 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 4 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Headlamp insecure |1.2.3b| | 3 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Handlebar mounting clamp loose |2.1.1a| | 3 |
| Front suspension has inadequate damping effect. |2.3.6c| | 3 |
| Nearside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Rear Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 2 |
| Nearside Front Position lamp not working (4.2.1 (a)) | 2 |
| Offside Front Position lamp not working (4.2.1 (a)) | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Stop lamp missing |1.3.3a| | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Offside Rear Road spring worn so that its cross sectional area is reduced and seriously weakened (5.3.1 (b) (i)) | 2 |
| Offside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Front position lamp damaged and function impaired |1.1.1b| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Nearside Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Throttle operating incorrectly Sticking open on right lock (6.2.7 (a) (i)) | 2 |