| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 11 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Horn not working |1.7.3a| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Offside Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Front Wheel spoke excessively loose |4.2.1b| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Front wheel spindle loose |2.3.3a| | 1 |
| Rear Rear suspension component loose |2.4.A.1a| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Brake lever excessively corroded |3.2.A1c| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Front Brake lever attachment screws loose |3.1.2b| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Nearside Drive chain worn to excess |6.2.1e| | 1 |
| Rear Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Brake cable excessively corroded |3.2.A1b| | 1 |
| Front Front position lamp flickers when tapped lightly by hand |1.1.3c| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Fuel pipe union leaking |7.2.1a| | 1 |
| Brake pedal cannot be applied smoothly fouling on exhaust |3.1.3d| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Wheel fractured significantly reducing the original strength |4.2.1a| | 1 |
| Steering headbearing has excessive free play (2.2.2) | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Stop lamp switch with a delay in operation Incorrectly adjusted spring (4.3.2 (a) (ii)) | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Brake locking device insecure |3.2.A1e| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Offside Front Brake back plate|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Position lamp switch faulty |1.1.4a| | 1 |
| Fuel cap sealing washer torn |7.2.2c| | 1 |
| Brake cable badly frayed |3.2.A1b| | 1 |
| Front Wheel spoke missing |4.2.1b| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Brake locking device missing front brake cable lower pivot-split pin missing |3.2.A1e| | 1 |
| Rear suspension bush has excessive free play swinging arm excess play |2.4.A2a|i|| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Front Brake cable badly frayed |3.2.A1b| | 1 |
| Nearside Rear Stop lamp does not illuminate by the operation of both brake controls adjustment of switch only rear switch fitted (4.3.2 (a) (iii)) | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Nearside Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Rear reflector on motorcycle deteriorated and function impaired |1.4.2a| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Wheel spoke excessively corroded |4.2.1b| | 1 |
| Rear Brake pedal mounting insecure |3.1.2a| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Sidecar wheel spindle loose |5.2.3b| | 1 |
| Rear wheel has a loose wheel bolt|s| |4.2.3a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Front position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Brake pedal is inoperative |3.1.3c| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Front Brake lever excessively chafed |3.2.A1a| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Brake lever is inoperative |3.1.3c| | 1 |