| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 9 |
| Registration plate issues | 9 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Drive belt excessively tight (6.1.7 (k) (i)) | 2 |
| Fuel pipe leaking excessively or a risk of fire (6.1.3 (b) (ii)) | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Brake lever not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Drive belt worn to excess (6.1.7 (c) (i)) | 1 |
| Drive belt pulley worn to excess (6.1.7 (c) (i)) | 1 |
| Drive belt so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Drive belt pulley worn to excess (6.1.7 (c) (i)) | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Offside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |