| Most common failures | No# failures |
|---|
| Rear reflector missing (4.8.2 (a) (ii)) | 21 |
| Registration plate lamp issues | 11 |
| Stop lamp remains on when the brakes are released | 8 |
| Horn not working (7.7 (a)) | 8 |
| Headlamp aim out of alignment | 8 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 7 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 7 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 6 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 3 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 3 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 2 |
| Registration plate issues | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Front Headlamp aim unable to be tested (4.1.2 (b)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 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 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |
| Nearside Front Horn not working (7.7 (a)) | 1 |
| Offside Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Horn not working Horn not working (7.7 (a)) | 1 |
| Rear Rear reflector missing Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Nearside Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Front Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Nearside Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Lower Suspension component mounting has an unsafe modification (5.3.3 (c) (i)) | 1 |
| Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Rear Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Headlamp aim projected beam image obviously incorrect Beam image/kick up to right. (4.1.2 (c)) | 1 |
| Rear brake disc in such a condition that it is seriously weakened | 1 |
| Nearside Rear Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Nearside Rear Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 1 |
| Offside Rear Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Rear Brake rod insecure (1.1.15 (c)) | 1 |
| Rear Stop lamp not working with brake pedal (4.3.1 (a) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Central Front Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |