| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 69 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 28 |
| Stop lamp remains on when the brake is released |1.3.1e| | 24 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 22 |
| Rear reflector on motorcycle missing |1.4.1| | 19 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 17 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 16 |
| Registration plate issues | 15 |
| Rear reflector on motorcycle obscured |1.4.1| | 15 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 14 |
| Stop lamp remains on when the brakes are released | 13 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Registration plate lamp issues | 11 |
| Steering headbearing has excessive free play |2.2.2| | 10 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 10 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 9 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 9 |
| Riders seat insecure |6.2.1a| | 7 |
| Front suspension has inadequate damping effect. |2.3.6c| | 6 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Headlamp insecure |1.2.3b| | 6 |
| Front Brake excessively binding (1.2.1 (f)) | 6 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 4 |
| Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Front Headlamp insecure |1.2.3b| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Rear Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 4 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 3 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Horn control defective |1.7.2a| | 3 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 3 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Rear Front mudguard insecure |2.3.7| | 2 |
| Rear Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 2 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 2 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Horn is not a constant note |1.7.3c| | 2 |
| Stop lamp missing |1.3.3a| | 2 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 2 |
| Horn sound not in accordance with requirements (7.7 (c)) | 2 |
| Riders seat insecure (6.2.5 (a) (ii)) | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front Front mudguard insecure |2.3.7| | 2 |
| Front Stop lamp missing |1.3.3a| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front position lamp insecure |1.1.1c| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front suspension assembly component excessively misaligned |2.3.1| | 2 |
| Front mudguard insecure |2.3.7| | 2 |
| Central Front Brake excessively binding (1.2.1 (f)) | 2 |