| Most common failures | No# failures |
|---|
| Registration plate issues | 27 |
| Headlamp aim out of alignment | 10 |
| Rear reflector missing (4.8.2 (a) (ii)) | 10 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Rear reflector missing |4.8.2 |a| |ii|| | 3 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Rear Wheel spoke excessively loose (5.2.2 (d)) | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Horn missing |1.7.1| | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Shock absorber has negligible damping effect Top out (5.3.2 (b)) | 1 |
| Front Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Rear Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Stop lamp remains on when the brake is released front brake lever |1.3.1e| | 1 |
| Stop lamp does not illuminate immediately a brake applies rear brake pedal |1.3.1a| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Motorcycle structure joining/attachment plate or fastening insecure rear sub frame mounting loose |front| |6.1.1 |b| |i|| | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Drive belt worn to excess |6.2.1e| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Upper Horn control not functioning. |1.7.2b| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Wheel spoke excessively loose |5.2.2 |d|| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Headlamp not working on dipped beam flickers |4.1.1 |a| |ii|| | 1 |
| Headlamp not working on main beam high / low reversed on switch |4.1.1 |a| |ii|| | 1 |
| Front Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Rear Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Lower Chain guard insecure |6.1.7 |i|| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort run out (1.2.1 (e)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted |6.1.7 |j| |i|| | 1 |
| Stop lamp adversely affected by the operation of another lamp Does not work when lights are switched on (4.3.3 (b)) | 1 |
| Registration plate lamp issues | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Rear Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Rear Lower Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Front Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Rear reflector missing we stuck one on |4.8.2 |a| |ii|| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Suspension arm pin or bush excessively worn swinging arm bearings |5.3.4 |a| |i|| | 1 |
| Steering lock stop maladjusted |2.1.3| | 1 |
| Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |