| Most common failures | No# failures |
|---|
| Rear reflector missing (4.8.2 (a) (ii)) | 120 |
| Headlamp aim out of alignment | 100 |
| Registration plate issues | 91 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 58 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 34 |
| Registration plate lamp issues | 33 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 16 |
| 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)) | 12 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 12 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 10 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 10 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 9 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 9 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 6 |
| Horn not working (7.7 (a)) | 6 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 5 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 5 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 5 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 5 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Headlamp aim not tested (4.1.2 (b)) | 4 |
| Horn not working (7.7 (a) (ii)) | 4 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 4 |
| Rear Footrest missing (6.2.12 (a)) | 4 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 3 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 3 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Front Position lamp not working (4.2.1 (a)) | 3 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 3 |
| Riders seat insecure (6.2.5 (a) (ii)) | 3 |
| Headlamp aim unable to be tested (4.1.2 (b)) | 3 |
| Front Wheel excessively distorted (5.2.2 (c) (i)) | 2 |
| Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 2 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 2 |
| Central Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Offside Rear Footrest missing (6.2.12 (a)) | 2 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 2 |
| Nearside Rear All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Rear Direction indicator adversely affected by the operation of another lamp (4.4.3 (b)) | 2 |
| Exhaust markings indicating not for road use or similar wording (6.1.2 (c)) | 2 |
| Nearside Rear Direction indicator missing (4.4.1 (a) (ii)) | 2 |