| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 41 |
| Registration plate lamp issues | 11 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 4 |
| Front Brake excessively binding (1.2.1 (f)) | 4 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 3 |
| Registration plate issues | 3 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 3 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 2 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Offside Front Brake disc contaminated contaminated with oily residue (1.1.14 (b)) | 1 |
| Footrest missing (6.2.12 (a)) | 1 |
| Front Brake caliper damaged and braking performance affected (1.1.16 (a) (ii)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 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 |
| Front Brake hose connection leaking (1.1.12 (c)) | 1 |
| Headlamp aim projected beam image obviously incorrect led bulb fitted no beam pattern or light thrown out (4.1.2 (c)) | 1 |
| Brake performance unable to be tested (1.2.1 (g)) | 1 |
| Headlamp aim projected beam image obviously incorrect Fog lights fitted without switch causing incorrect beam image (4.1.2 (c)) | 1 |
| Offside Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |