| Most common failures | No# failures |
|---|
| Registration plate issues | 99 |
| Rear reflector on motorcycle missing |1.4.1| | 87 |
| Headlamp aim out of alignment | 46 |
| Horn not working |1.7.3a| | 42 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 41 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 29 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 28 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 26 |
| Rear reflector missing (4.8.2 (a) (ii)) | 22 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 17 |
| Front wheel bearings have excessive free play |2.3.5b| | 16 |
| Front wheel bearings are excessively rough |2.3.5b| | 14 |
| Horn missing |1.7.1| | 13 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Rear reflector missing |4.8.2 |a| |ii|| | 11 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 9 |
| Horn not working (7.7 (a) (ii)) | 9 |
| Stop lamp not working (4.3.1 (a) (ii)) | 9 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Drive chain worn to excess |6.2.1e| | 7 |
| Rear Position lamp not working (4.2.1 (a)) | 7 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 7 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 6 |
| Stop lamp remains on when the brakes are released | 6 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 6 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Horn not working (7.7 (a)) | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 5 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 5 |
| Registration plate lamp issues | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Horn not working |7.7 |a| |ii|| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 4 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Headlamp at least one does not illuminate on dipped beam (1.2.2a(i)) | 3 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 3 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 3 |
| Horn not working (1.7.3a) | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Headlamp aim not tested (1.6) | 2 |
| Rear position lamp does not illuminate immediately when it is switched on (1.1.3a) | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Wheel bearing so rough it is likely to overheat or break up |5.1.3 |b| |ii|| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 2 |
| All direction indicators missing (4.4.1 (a) (ii)) | 2 |
| Front Horn missing |1.7.1| | 2 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 2 |