| Most common failures | No# failures |
|---|
| Registration plate issues | 48 |
| Rear reflector on motorcycle missing |1.4.1| | 28 |
| Rear reflector missing (4.8.2 (a) (ii)) | 26 |
| Horn not working |1.7.3a| | 14 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 11 |
| Horn not working (7.7 (a) (ii)) | 11 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 8 |
| Horn missing |1.7.1| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 6 |
| Headlamp aim out of alignment | 6 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 6 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 6 |
| Rear reflector missing |4.8.2 |a| |ii|| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Horn not working |7.7 |a| |ii|| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 3 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Headlamp aim not tested (4.1.2 (b)) | 3 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear Wheel spoke missing (5.2.2 (d)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Registration plate lamp issues | 2 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 2 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Nearside Clutch lever positioned so it cannot be readily operated. clutch lever very loose on handle bar |6.2.1g| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Front Horn missing NO HORN |1.7.1| | 1 |
| Offside Front Stop lamp missing |1.3.3a| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Front Horn not working |7.7 |a| |ii|| | 1 |
| Rear Rear reflector on motorcycle dirty and function impaired |1.4.2a| | 1 |
| Front Front wheel spindle loose |2.3.5a| | 1 |
| Rear Rear suspension component loose lock nut |2.4.A.1a| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Horn sound not in accordance with requirements |7.7 |c|| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Rear Wheel bearing rough when rotated and excess play. |5.1.3 |b| |i|| | 1 |
| All direction indicators missing |4.4.1 |a| |ii|| | 1 |
| Headlamp not working on dipped beam main is working . |4.1.1 |a| |ii|| | 1 |
| Direction indicators not working ALL |1.5.1c| | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Rear Stop lamp missing switch |1.3.3a| | 1 |
| Drive chain excessively tight |6.2.1d| | 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 |
| Nearside Rear Wheel spoke excessively loose |5.2.2 |d|| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Front Headlamp aim headlamp deteriorated and function impaired bulb wrong |1.2.3a| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Wheel bearing has excessive play Rear |5.1.3 |a| |i|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Horn not working not fitted (7.7 (a) (ii)) | 1 |
| Front Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Front Wheel fractured (5.2.2 (a)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| All direction indicators missing (4.4.1 (a) (ii)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Stop lamp not working Not fitted with switch (4.3.1 (a) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen Does not have flat top image (4.1.2 (a)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Position lamp not working because stop light staying on can not assess if working. (4.2.1 (a)) | 1 |
| Rear Direction indicator obviously incorrectly positioned Only 140mm spacing (4.4.3 (a)) | 1 |
| Front brake disc in such a condition that it is seriously weakened | 1 |
| Rear brake disc in such a condition that it is seriously weakened | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Dipswitch does not operate immediately when selected on main beam (4.1.3 (b)) | 1 |
| Throttle operating incorrectly sticking (6.2.7 (a) (i)) | 1 |
| Rear Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Shock absorber has a serious fluid leak nearside & offside fork seals (5.3.2 (b)) | 1 |
| Chain guard insecure (6.1.7 (i)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Drive chain sprocket so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |