| Most common failures | No# failures |
|---|
| Horn not working |1.7.3a| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Headlamp aim out of alignment | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Direction indicators not working |1.5.1c| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Rear Front mudguard insecure |2.3.7| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Suspension arm corroded and seriously weakened |5.3.3 |b| |i|| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Roller brake test brake efficiency less than 27.5% overall (1.2.2 (a) (ii)) | 1 |
| Front Brake lever is positioned so that the brake cannot be readily applied brake lever hits offside mirror (1.1.2 (d)) | 1 |
| Rear Stop lamp light intensity significantly reduced position lamp brighter than brake light (4.3.3 (a) (ii)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Fuel cap ineffective fuel cap seal heavily perished (6.1.3 (b) (i)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Rear Wheel spoke missing |4.2.1b| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front wheel spindle securing nut locking device missing (2.3.5a) | 1 |
| Rear wheel spindle securing nut locking device missing (2.4.A.2b) | 1 |
| Rear position lamp does not illuminate immediately when it is switched on (1.1.3a) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Front Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |