| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 6 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Registration plate issues | 3 |
| Registration plate lamp issues | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Exhaust system insecure |6.1.2 |a|| | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Front All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Drive chain so worn it is likely to fail tight links (6.1.7 (c) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Rear Valve stem seriously damaged close to failing (5.2.3 (j)) | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Central Front Position lamp not working (4.2.1 (a)) | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Centre Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |