| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 45 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 17 |
| Registration plate issues | 15 |
| Headlamp aim beam image kick up to the offside |1.6| | 13 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Drive chain excessively loose |6.2.1d| | 8 |
| Front wheel bearings have excessive free play |2.3.5b| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 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 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 2 |
| 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 reflector missing (4.8.2 (a) (ii)) | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Brake lever pivot has excessive free play securing bolt loose (1.1.1 (b)) | 1 |
| Front Headlamp not working on dipped beam replaced bulb (4.1.1 (a) (ii)) | 1 |
| Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Horn not working |1.7.3a| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| All direction indicators missing (4.4.1 (a) (ii)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition |8.1.1 |a|| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 1 |
| Nearside Rear Position lamp not working |4.2.1 |a|| | 1 |
| Nearside Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Direction indicator missing Sidecar |4.4.1 |a| |ii|| | 1 |
| Offside Front All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Nearside Front All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear Wheel spindle locking device missing (5.2.1 (d)) | 1 |
| Nearside Exhaust silencer insecure (8.1.1 (b) (i)) | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Upper Front suspension assembly component loose fork yoke nut |2.3.1| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Front Upper Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Fuel tank leaking excessively or a risk of fire Tank fuel tap severe leak. (6.1.3 (b) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Fuel tank insecure (6.1.3 (a) (i)) | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Central Rear Position lamp not working (4.2.1 (a)) | 1 |