| Most common failures | No# failures |
|---|
| Registration plate issues | 29 |
| Rear reflector on motorcycle missing |1.4.1| | 12 |
| Rear reflector missing (4.8.2 (a) (ii)) | 9 |
| Headlamp aim out of alignment | 8 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Horn missing |1.7.1| | 5 |
| Horn not working |1.7.3a| | 5 |
| Horn not working (7.7 (a) (ii)) | 5 |
| Horn not working |7.7 |a| |ii|| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Horn not working (7.7 (a)) | 3 |
| Stop lamp remains on when the brakes are released | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Rear Position lamp not working |4.2.1 |a|| | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 2 |
| Registration plate lamp issues | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Front Brake disc insecure |1.1.14 |a| |ii|| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Front Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Front Wheel spoke excessively loose |5.2.2 |d|| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Centre Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Headlamp not working on dipped beam HEAD LAMP WIRED INCORRECT MAIN ON DIP DIP ON MAIN |4.1.1 |a| |ii|| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride Chain horseshoe link wrong direction. |6.2.1h| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Stop lamp not working on either brake |4.3.1 |a| |ii|| | 1 |
| Rear Position lamp light intensity significantly reduced |4.2.3 |a| |ii|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Drive chain horseshoe locking device incorrectly fitted |6.1.7 |j| |i|| | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Shock absorber has an excessively worn bush |5.3.2 |c|| | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Rear Wheel fixing missing (single fixing) (5.2.1 (a) (ii)) | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Suspension arm pin or bush excessively worn swing arm bearings worn out (5.3.4 (a) (i)) | 1 |
| Rear Brake disc insecure (1.1.14 (a) (ii)) | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Horn missing |1.7.1| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Stop lamp not working On front control (4.3.1 (a) (ii)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Suspension arm pin or bush excessively worn swingarm bearing excessively worn (5.3.4 (a) (i)) | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Rear Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Rear Shock absorber has an excessively worn bush lower bush (5.3.2 (c)) | 1 |
| Front Shock absorber has a serious fluid leak fork seal (5.3.2 (b)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Front Brake caliper insecurely mounted and braking performance affected (1.1.16 (c) (ii)) | 1 |
| Rear Brake caliper insecurely mounted and braking performance affected (1.1.16 (c) (ii)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |