| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 10 |
| Horn not working (7.7 (a) (ii)) | 4 |
| Stop lamp remains on when the brakes are released | 4 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Registration plate issues | 3 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Rear suspension bearing has excessive free play (2.4.A2a(i)) | 2 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Rear Brake fluid significantly below minimum mark (1.1.10 (d) (ii)) | 2 |
| Front Brake master cylinder leaking coming from reservoir (1.1.10 (b) (ii)) | 1 |
| Rear position lamp does not illuminate immediately when it is switched on (1.1.3a) | 1 |
| Front wheel bearings have excessive free play (2.3.5b) | 1 |
| Front wheel bearings are excessively rough (2.3.5b) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.5.1) | 1 |
| Rear suspension bush has excessive free play (2.4.A2a(i)) | 1 |
| Drive chain excessively tight (6.2.1d) | 1 |
| Locking device(s) not correctly fitted which may make the motor bicycle dangerous to ride (6.2.1h) | 1 |
| Rear Floor brake test indicates a binding brake (3.3.C2c) | 1 |
| Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Front Handlebar deformed (2.1.1b) | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Nearside Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Nearside Front All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Front Shock absorber has a serious fluid leak Both front shock absorbers leaking (5.3.2 (b)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Rear Position lamp not working rear light not working (4.2.1 (a)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Nearside Front Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Shock absorber has negligible damping effect stiff (5.3.2 (b)) | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Drive chain sprocket excessively loose Cush drive rubbers worn excessively (6.1.7 (c) (i)) | 1 |
| Brake component inadequately mounted Mounting bolt missing/broken off rear brake disc (1.1.21 (c)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Headlamp insecure front headlight insecure but likely to become detatched (4.1.1 (c)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected when steering left (6.2.7 (a) (ii)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected over revving at lock to lock steering due to throttle cable routed incorrectly (6.2.7 (a) (ii)) | 1 |