| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 7 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Horn not working |1.7.3a| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Centre Front Upper Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Front Upper Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Registration plate issues | 1 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Stop lamp does not illuminate immediately a brake applies Front |1.3.1a| | 1 |
| Rear Brake hose leaking fluid |3.2.B4| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Front Headlamp aim not tested |1.6| | 1 |
| Upper Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Central Rear Drive chain excessively loose |6.2.1d| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride drive chain |6.2.1h| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected |2.2.2 |f| |ii|| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front suspension has a fracture of a load bearing member or its supporting structure. |2.3.8| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Front wheel spindle loose |2.3.3a| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Nearside Front Upper Handlebar excessively corroded |2.1.1b| | 1 |
| Offside Front Upper Handlebar excessively corroded |2.1.1b| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Upper Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |