| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 11 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Horn not working |1.7.3a| | 2 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Chain guard fouling another component |6.2.1c| | 2 |
| Front Throttle operating incorrectly |6.2.1f| | 2 |
| Rear wheel insecure |4.2.3b| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Brake component is excessively corroded |3.1.5| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Brake lever attachment screws loose |3.1.2b| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Brake back plate|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Front Brake lever is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Nearside Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Offside Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Sidecar wheel bearings are excessively rough |5.2.3d| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Wheel spoke cracked. |4.2.1b| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear position lamp missing |1.1.1a| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Rear Front mudguard insecure |2.3.7| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| An item not tested |Manual| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Brake pedal cannot be released smoothly catching on side panel |3.1.3d| | 1 |
| Brake locking device missing bottom mount point |3.2.A1e| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride clutch lever nut missing |6.2.1h| | 1 |
| Rear Riders seat insecure |6.2.1a| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Front Brake locking device insecure |3.2.A1e| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Centre Fuel tank leaking |7.2.1a| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |