| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 68 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 36 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 24 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 22 |
| Stop lamp remains on when the brake is released |1.3.1e| | 16 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 12 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 12 |
| Registration plate issues | 11 |
| Stop lamp remains on when the brakes are released | 11 |
| Registration plate lamp issues | 11 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 10 |
| Steering headbearing has excessive free play |2.2.2| | 8 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 7 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 6 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 5 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 4 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Handlebar mounting clamp loose |2.1.1a| | 4 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Stop lamp not working |4.3.1 |a| |ii|| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 4 |
| Front Brake excessively binding (1.2.1 (f)) | 4 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 3 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 3 |
| Front brake disc in such a condition that it is seriously weakened | 3 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 3 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Rear Brake lever mounting insecure |3.1.2a| | 3 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 2 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 2 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Riders seat insecure (6.2.5 (a) (ii)) | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 2 |
| Nearside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Rear Rear wheel bearings are excessively rough |2.4.A.2c| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 2 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |