| Most common failures | No# failures |
|---|
| Rear reflector missing (4.8.2 (a) (ii)) | 97 |
| Headlamp aim out of alignment | 85 |
| Registration plate lamp issues | 53 |
| Registration plate issues | 47 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 25 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 11 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 9 |
| Horn not working (7.7 (a)) | 9 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 7 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 7 |
| 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)) | 5 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 5 |
| Front Brake excessively binding (1.2.1 (f)) | 5 |
| Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 4 |
| Rear All direction indicators obviously incorrectly positioned (4.4.3 (a)) | 4 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 4 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Stop lamp remains on when the brakes are released | 4 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 3 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 3 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Nearside Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Central Rear Upper Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |