| Most common failures | No# failures |
|---|
| Rear reflector missing (4.8.2 (a) (ii)) | 20 |
| Registration plate issues | 13 |
| Headlamp aim out of alignment | 13 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 7 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Registration plate lamp issues | 4 |
| Nearside Rear Drive chain worn to excess (6.1.7 (c) (i)) | 3 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 3 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 3 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Nearside Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Front Exhaust silencer insecure (8.1.1 (b) (i)) | 1 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Nearside Front Upper All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Brake component inadequately mounted (1.1.21 (c)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls not operating when rear brake applied (4.3.2 (a) (iii)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Nearside Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Nearside Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Rear Rear reflector reflecting white to the rear (4.8.2 (a) (ii)) | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 1 |
| Offside Handlebar grip insecure to handlebar throttle grip. (2.2.1 (d) (ii)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |