| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 41 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 25 |
| Steering headbearing has excessive free play |2.2.2| | 17 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 11 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 11 |
| Registration plate lamp issues | 10 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 9 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 9 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Riders seat insecure |6.2.1a| | 8 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 8 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 8 |
| Registration plate issues | 7 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 7 |
| Horn not working |1.7.3a| | 6 |
| Rear Position lamp not working (4.2.1 (a)) | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 5 |
| Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Rear reflector on motorcycle obscured |1.4.1| | 4 |
| Stop lamp remains on when the brakes are released | 4 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 4 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 4 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 4 |
| Rear reflector on motorcycle obscured |1.4.2b| | 3 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 3 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 3 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 3 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Nearside Rear Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Riders seat insecure |6.2.5 |a| |ii|| | 2 |
| Centre Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Central Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |