| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 22 |
| Rear reflector missing (4.8.2 (a) (ii)) | 7 |
| Registration plate lamp issues | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Registration plate issues | 3 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Brake master cylinder leaking |1.1.10 |b| |ii|| | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Stop lamp does not illuminate immediately a brake applies rear brake light inop |1.3.1a| | 1 |
| Front Brake master cylinder leaking (1.1.10 (b) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls stop lamp not working on front lever (4.3.2 (a) (iii)) | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Nearside Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front Brake fluid reservoir fluid level significantly below minimum level |1.1.10 |d| |ii|| | 1 |
| Offside Front Throttle operating incorrectly Binding and not returning on full lock or straight ahead. (6.2.7 (a) (i)) | 1 |
| Throttle operating incorrectly sticking (6.2.7 (a) (i)) | 1 |
| Rear Position lamp light intensity significantly reduced |4.2.3 |a| |ii|| | 1 |