| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 18 |
| Headlamp aim beam image kick up to the offside |1.6| | 7 |
| Registration plate issues | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Front Front position lamp incorrect colour |1.1.2a| | 2 |
| Front Footrest insecure |6.2.1a| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear Stop lamp switch with a delay in operation |4.3.2 |a| |ii|| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Brake lever mounting insecure |3.1.2a| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| All direction indicators incorrect colour (4.4.3 (a)) | 1 |
| Rear reflector missing rear reflector fitted (4.8.2 (a) (ii)) | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Rear Brake excessively binding pivot arm siezed |1.2.1 |f|| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Stop lamp not working bulb blown (4.3.1 (a) (ii)) | 1 |
| Offside Rear Lower Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake lever excessively damaged |3.2.A1c| | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Horn not working |1.7.3a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Footrest insecure (6.2.12 (a)) | 1 |
| Footrest missing |6.2.1a| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Front Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| All direction indicators missing (4.4.1 (a) (ii)) | 1 |
| Front Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |